I did the same once in axis. The idiot in the other side was not aware of mcc. I explained him what is mcc and where he can look for mcc in his system. Then he found out mcc. Then he was asking for what purpose you need mcc(like interrogation). at the end he told mcc. I gave the conversation 1star and wrote feedback as 'please don't hire bachhas who hv no knowledge about their own banking system'
One of many 'evergreen' memories with axis.