State Bank Of India [SBI] — Dishonour of Cheque no [protected] for RS 4255

Address: 141004

I am having salary account in State Bank of India, PAU Branch, Ludhiana. My wife is joint holder of the account. The cheque was given for AMC of Water Purifier. But it was Dishonoured. After enquiring from the bank they told me that my wife signature not available in the bank record. They ask me to submit signature of both o[censored]s along with the identity proof. My account is about 16 year old . The cheque books are issued in the name of both. We have taken even housing loan (in both name in 2004 and repaid the same. May I know the negligence of the staff for not maintaining popper record. Who will be responsible for delayed payment and penalty if any? It is not expected from no.one bank of the country.