NEW DELHI (AFP) - Cash-strapped Air India was forced to cancel some flights Friday after oil companies refused to give the state-run carrier fuel because of a failure to pay bills. The flagship carrier cancelled at least four flights in southern India after state-owned oil firms said they would not give the carrier jet fuel because of unpaid debts, a spokesman said. The spokesman, who declined to be named, played down the cancellations, saying it was "not a major problem" and flights had returned to normal. "This problem is being resolved," the spokesman told AFP. "We expect to pay for our fuel and also to obtain some assistance from the aviation ministry."