The customer is requesting to close their account number at the specified YES Bank branch. They have enclosed their debit card and unused check numbers or confirmed destroying them. They also hold a demat account and MF online account with the bank and have attached request letters. The reason for closing the account is given as either shifting banks, moving residences, or being unhappy with service or account features. The customer requests that any remaining balance be refunded via NEFT/RTGS, pay order, DD, or cash depending on the amount. They also authorize the bank to cancel any standing instructions linked to the closed account.