Well, i know how bad it is! And the bigger the amount gets, the bigger the trouble gets. First they dont agree on the refund amount. Then they dont agree on the interest amount. Finally when everything is closed, and ur amount is finalised, they dont give u cheque on time. U claim interest on late refund, which is again not agreeable for the AO.U ultimately end up foregoing some amount & get whatever u can out of the mouth of that crocodile.