Kotak Mahindra Bank — blocking of my saving account and about credit card

Very bad customer service on 4th i gave call to customer services that i want to settlement the amount they said we have put the request you will get the call but still no body calls me. Then i got the call from collection team to pay 280 as a minimum amount and your account will get unlock. I made the payment 300 rs but still they kept my account balance on hold. Today i call customer service he told me that you have to make 5200 payment. I think they themselves dont know. Due to this my emi has got bounced. Such a bad service. Also on mobile app the minimum amount due was 280. And now the are saying 5250.