I had made a payment that went through in the portal a few months back. They couldn't locate the payment, so got the transaction number from the bank and gave it to them. Every time they close the ticket with conflicting reports and no call back. When I follow through, either they say it has been reversed or that it has already been credited to the account, neither of which is true. Raised it till the appellate level, who responded "as per the records, your billing issue is resolved". It is merely an issue of comprehension from their side, they can't even understand what to look for even after explaining it in the most detailed way possible. Frustrating.