Barclay Credit Card Priority Circle Membership — cancellation of fraudly levied membership

Hi sir/madam,
It is to acknowledge you that I Rohit sharma having a credit card with Barclaycard India.My credit card no is ([protected]).I would like to tell you that around 40 days back I received a call from them regarding a Priority Circle Membership and was told if I go for this I will have to pay RS 5000+service tax.I clearly told that person who called me up that first you send me the written proof stating or indicating all the discount and privileges available.But without sending any written documents to me I was billed with the above mentioned amount.I called the Barclay card Priority Cirlcle people and told tham that I want to cancel this policy.They asked me the problem I told them but even after they didn't cancel it and refused to cancel when I made a lot of calls.I called the customer care people as well but was not provided with appropriate response.Now they are calling me around 10 times in a day regarding making the payment.if no action is taken at the earliest than I will have to lodge a complaint in Consumer Court of India for fraud and physically harassing me.Than I will demand compensation from you people as well, for mind and physical disturbance and harassment.I request you to take an action at your earliest.I shall be highly obliged.
Thanking you
Rohit sharma