State Bank Of India [SBI] — 9 years old account holder, not getting message messages submit KYC

Address: Pune, Maharashtra, 412307

Hello sir/mam,
I am getting messages to submit kyc or visit branch to open new account,
As i gone to branch branch manager said might document missed from them,
My account is almost 9 years old,
Anyway i visit the sub branch of sbi and ask to branch manager to get new account to link my existing account, they said i cant give, after lot of struggle i got the form.
My question is why should i struggle for sbi mistake.

Please help me as soon as possible