[Resolved]  Kotak Mahindra Bank — credit card fraud shamelessly

I had recieved a reversal letter for my credit card from Kotak Mahindra Bank on 4th June, 2018. As per reversal letter I had cleared the revised total due amount of Rs 13, 200 (Mobile Receipt Reference No. (MB[protected] on 8th June, 2018. But ironically my card became deactivated after making the payment. Moreover, after clearing all the dues its showing that there is still outstanding payment and getting regular calls from Bank for clearing the same. Even there was a recoverable hold balance on my savings account which is also not refunded yet.
A person from Bank Mr. Rakesh Agarwal( Apeejay House, Kolkata, collection dept.) had confirmed me repeatedly that it will take not more than seven days to get activated with increased limit and all. Now he is not receiving the calls. Is this unprofessional attitude or a just a smooth way to cheat customers ? I have both savings and current account with Kotak Mahindra Bank.But now I have started losing faith on Kotak Mahindra Bank due to the series of miss-commitments from your designated executives.
I am looking for a quick solution. Its my humble request to take care of the situation and make my card activated with full limit and refund the amount of hold balance at the earliest.