Bank not updating business mailing address different from registered address

Domain investor’s registered business is 100% online, with customers only outside India, and she wishes to change the mailing address for her bank account to her current address which is different from business registered address. It is a small proprietorship business with no staff, and only want the GST only because it is an export business. Though the bank form is showing a provision for a separate mailing and registered address, the bank staff is insisting that the mailing address should be same as the registered address which is inconvenient, since the domain investor does not not visit the registered address due to personal reasons.

Yet getting all the documents will take time since the domain investor may have to purchase property only for GST registration. Do banks force current account holders, especially proprietors to use a mailing address which is the same as registered address or is the bank discriminating against the domain investor alone?

The domain investor does not wish to use her goa mailing address because there is a lot of property fraud, criminal trespassing, correspondence theft, yet the bank staff is refusing to use a different mailing address. Any legal help to get the mailing address updated will be appreciated, kindly contact at info@blogposts.in.