IBM Canada is again under scrutiny as federal auditors probe a major call centre contract — the latest in more than a decade of complaints and inquiries over the company’s public sector work, marked by rounds of finger-pointing and mounting costs.

The most recent inquiry follows the auditor general’s examination of the Canada Revenue Agency’s advice to taxpayers. It found that, in addition to receiving mostly incorrect general information about taxes, callers left on hold did not get updates on their wait times, even though that feature was described in IBM’s contract for the telephony system. Questions about invoices, penalties and oversight have prompted Auditor General Karen Hogan to launch a separate audit into how bureaucrats managed IBM’s contract.