I just sent the following message to one bank:
IMO, everyone should send such messages to their bank.
Code:
Dear HDFC Bank
Here I am informing you that I do NOT want any type of your additional paid service.
So I am opting out from any and all paid service you are offering without my written consent. This applies to current and all such future paid services.
If you charged me without my consent then I will sue in court.
Thanks,
{my name}