State Bank Of India [Sbi] — a/c blocked by bank without intimation

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state bank of india
Sir, this is for your information that above mentioned account no. Has been blocked by bank without intimation, so that I am not able to do any transaction.many times I had submitted my KYC in local branch hisar and noida branch.before this no any call or msg or written information given by bank.please help in said matter as soon as possible.last year transaction done by me.bcoz of bank mistake customer facing .pls do something