Amazon In — They hold my amazon account

Website:

www.amazon.in

Dear sir,
My name is pradip Mondal email id is [protected]@gmail.com and my no. Is [protected] which is registered with amazon. My amazon account is locked from 5 days. Reason is that i placed a order on amazon by mistake i fill wrong credit card no after please order i relies that i fill anything wrong i imidately cancelled that order.
After one day i see my account is locked. I try to contact customer care but they tell they can't help me only investigate team unlock my account. I sent mail on [protected]@amazon.in, [protected]@amazon.in but they not listening anything they send me mail that [ your order can't be delivered please fax your credit card details with billing address ] but that credit card no i filled is wrong. I also try to fax my own credit card details but fax no which they given give transmission error and fax not sent, i told these things to customer care but they are not helping me also send again mail with all details that happen with me but they are not response to any my request.