State Bank Of India [SBI] — online mobile number register without knowing pin password

Address: 707107

Sir...
From last few days i have already applied for sbi account online and then i got my account passbook.in the passbook there was only my account/cif number and don't have any pin password it was saying to go atm and generate password through registration mobile number but sir last during online i have already attached my phone number since it has not been attached on my sbi... Then wht i do now.. I m not able to go branch...