Investors have dumped shares in Vocus after Australia's fourth-biggest telco ended a $2.2 billion bidding war for the company, saying the two suitors were unable to support the buy on the board's terms.

Investors have dumped shares in Vocus after Australia's fourth-biggest telco ended a $2.2 billion bidding war for the company, saying the two suitors were unable to support the buy on the board's terms.