PayUMoney — Settlement On hold, No response from payu

Payu kept our settlement on hold and asked for delivery proofs, even after providing them with proofs they are not responding. They close our tickets saying duplicate request and not reply onto the main ticket HN[protected]. What kind of customer support is this? Why do we have to wait for getting our own hard earned money? Is payu going to pay interest on the days the hold our settlement? This is not at all acceptable.