State Bank Of India [SBI] — unwarranted callings for sbi card even though asked them to stop

I am getting calls from SBI Card, Gurugram everyday. Sometimes three times in a day even though I have filled up the unsubscription of the services. Even after asking them to not send any credit card, still I got a message from Sbi card that they are sending one. They issued me a complaint number also to stop any card from coming but still they are bothering me everyday to verify some personal information which I am really not okay to give. They force you in a situation where you have to reveal your personal data for them verify which I am seriously not willing to give. This is becoming a harassment now.