Amazon Mturk — mturk account closed and lost $160

Address:

Kozhikode, Kerala

my mturk account was suspended due to name change problem. Actually i haven't done anything wrong. When i have changed my name on mturk, I have resubmitted the identity proof and got it approved at the same time itself. Also i have withdrawn money many times after this name change. there was no error at that time. But unexpectedly my account has been suspended. I haven't received any block from requesters till now. I have approval percentage more than 98.
when i contacted them, they said me to submit my marriage certificate. I have done so. But they replied me as follows:

your Amazon Mechanical Turk account was closed due to a violation of our Participation Agreement and cannot be reopened. Any funds that were remaining on the account are forfeited, and we will not be able to provide any additional insight or action.
my account balance is $160.
pls help me.
what can i do to get my account balance?
how can i reopen my account?
is the problem can be solved by changing the name to the older one?