AAP

Telstra has refunded a total $9.3 million to more than 70,000 customers it billed without their knowledge or consent following action by the consumer watchdog.

The Australian share market has opened higher after Wall Street rallied overnight from its post-rate rise dip.

Wall Street has climbed, helped by gains in Apple, Alphabet and Facebook, as well as the US Federal Reserve's confidence in the strength of the economy after it raised rates for the third time this year.

The Australian share market has closed lower, dragged down by mining and banking stocks after commodity prices weakened and the royal commission's interim report looms.

Outgoing ABC chairman Justin Milne says he quit because the controversy around his role was putting pressure on the national broadcaster.

The Australian share market has recovered its early losses to sit flat following Wall Street's dip in the wake of the US Federal Reserve's interest rate hike.

Health stocks have helped Wall Street edge higher, although banks have slipped ahead of a widely expected interest rate hike by the US Federal Reserve.

Oil prices eased after US data showed a surprise build in domestic crude inventories, but an impending drop in Iranian exports kept Brent futures above $US80 a barrel and on track for a fifth straight quarterly gain.

Gold prices held onto earlier losses as the US dollar trimmed gains after the Federal Reserve raised US interest rates as expected and forecast three more years of economic growth.

Expectations there will be an interest rate rise in the US has weighed on local banking shares, offsetting gains from energy and materials stocks, which is holding the Australian share market flat.

Santos plans to nearly double natural gas production to more than 100 million barrels of oil equivalent by 2025.

Australian shares have mirrored narrow overnight trading on Wall Street to remain steady at the open, lifted by the heavyweight materials sector and energy shares.

US stocks have opened little changed, as higher oil prices lifted energy stocks and banks rose in anticipation of an interest rate hike, but losses in Facebook and chipmakers weighed on the market.

Oil prices jumped on global supply concerns following US sanctions on Iran's oil exports, with benchmark Brent surging to a four-year high, before retraced gains after US President Donald Trump called again on OPEC to boost crude output.

Gold has edged higher as the dollar drifted ahead of a US Federal Reserve monetary policy meeting, but bullion's upside remained capped by strong US economic data that continues to underpin the greenback.

Australia's big banks and financial institutions are taking years to realise they have broken the law and too long to fix problems that have left 5 million consumers out of pocket by $500 million.

The Australian share market has closed flat, with the financial sector weighing on the market and offsetting strong gains from commodity-related stocks.

Australian shares opened flat after a tumble on Wall Street overnight, but local energy shares were on a good run with oil prices surging amid a global supply standoff.

Australian shares opened flat after a tumble on Wall Street overnight, but local energy shares were on a good run with oil prices surging amid a global supply standoff.

The S&P 500 and the Dow have closed lower after new US-China trade tariffs kicked in, dampening last week's hopes for talks between the two countries, and as investors awaited an expected interest rate hike by the Federal Reserve.

Global Benchmark Brent crude has jumped more than three per cent to a four-year high above $US80 a barrel after Saudi Arabia and Russia ruled out any immediate increase in production despite calls by US President Donald Trump for action to raise global supply.

Gold barely changed after the dollar dropped following remarks by the head of the European Central Bank, but then pared losses, although activity was muted ahead of a US central bank meeting this week.

Strong gains in the mining sector have lifted the Australian share market to finish the week higher as a major ratings agency upgraded its outlook on the country's credit standing and trade war worries recede.

A massive gold nugget worth at least $110,000 has been uncovered by a prospector in the northern Goldfields, weeks after Canadian gold miner RNC Minerals made an even bigger discovery near Kambalda.

Australian shares have followed Wall Street's overnight rise, with the heavyweight materials sector again driving early gains despite metals prices dropping.

Trade-sensitive industrial stocks have led the Dow Jones Industrial Average to a record closing high, the last of Wall Street's main indexes to fully regain ground since a correction that began in January.

Oil prices eased, pulling back after US President Donald Trump urged OPEC to increase production at its meeting in Algeria, and slowing bullish momentum that had previously propelled the market toward four-year highs.

Gold edged up to hit its highest in nearly a week as the US dollar slumped, its safe-haven appeal lessened by reduced fears over the near-term impact of Sino-US trade tensions.

Supermarket and banking stocks have pulled the Australian share market lower, with international trade hostilities weighing on the indices.

Customers will pay more for home-branded milk at Coles and Woolworths stores with the levy to be passed on to dairy farmers gripped by drought.

Australian shares have dipped after enjoying an opening bounce, with the heavyweight materials sector again the strongest early performer.

The S&P 500 and the Dow Jones Industrials Average have risen as bank stocks gained on rising Treasury yields, while a drop in Microsoft pressured the Nasdaq.