ICICI Bank — Closure of account without intimation even having FD in same account for 3 years

Address:

LOKVATIKA, NETIVILI, KALYAN (E) POST OFFICE, KALYAN 421301

Account Number :[protected]
Bank : ICICI0006983
KALYAN(EAST)

Past year in pandemic lockdown I have opened one "Insta Saving Account" online on ICICI bank portal.
Also done fixed deposit of 10000 Rs. for same for 3 years.
Now after one year they closed this Account without any intimation, and when visited bank they said you have not completed your KYC.
But have dome my KYC 2 months ago after receiving sms, so visited that bank ICICI0006983 and completed my KYC.
Now they are saying they don't have signature so they closed that account.
If the signature is pending then why didn't they take it when I went to the bank for KYC
They closed my account this is also acceptable, but what about the money in saving account and in FD for three years.
When visited bank they said you will receive Cheque at communication address provided while opening bank account.
Received cheque after 2-3 days whith incorrect name on It, but ICICI0006983 bank is not cooperating at all to make it correct.
I have also presented the proof of my Bank account print that I have taken while opening account online, having Correct name on it, then they said we cant do anything and you forgot your money.
What is This answer.????
This is not the answer you expect from such big Bank.
So I want to register a complaint against this Bank, so they will not do it with others too.
Very bad experience ...
i have visited bank 2-3 times after that and no one is showing their willingness to make it correct.
I am suffering because of their mistake, it not my fault as they have written my name incorrectly on cheque I received, after they closed my account