Tata Card — don't know how to deactivate/surrender the tata card

Address:

1,Ramani Complex, Peth Naka,Panchavati, Nashik, Maharashtra, 422003

I don't want to use tata card affiliated with sbi any more but don't know how to do it. As customer service before card purchase and after card purchase has a huge difference. And there are so many billed amounts even not using the card at all. I don't want to use tata card affiliated with sbi any more but don't know how to do it. As customer service before card purchase and after card purchase has a huge difference. And there are so many billed amounts even not using the card at all