Telecommunications service providers are estimating business losses of up to $150 million a year because of the national carrier Telstra’s billing inaccuracies, according to the Australian Financial Review. A survey by the Service Provider Action Network of 12 SPs with annual sales of nearly $600 million also found on-going costs associated with rectifying Telstra billing errors of $36-60 million a year. Telstra is suing three SPs – AAPT, Pacific Star and First Netcom – for unpaid debts totaling about $220 million. These telecommunications companies, in turn, are preparing to counter-sue Telstra, claiming damages for loss of business arising from the billing problems encountered