Reliance Communications — No response from [protected]@relianceada.com

Address:

560005

Name sheila mascarenhas
Subscriber number [protected]
Relationship number:[protected]
I have discontinued using my reliance data card since april end because from around[protected] i did not get internet service and got no response from their helpline.
I emailed [protected]@relianceada telling them i wished to discontinue their service on the 30th april and 3 times since then, but have not received any response.
Reliance is deducting a monthly charge directly from my credit card for my data card number [protected]. The credit card helpline requires reliance to stop the deductions. They cannot stop these payments with instructions from me.
When i have try to log on to their website and grievance cells, i key in my number i am told it is not valid. Yet they have billed me and taken rs.650 for that number on 28th may 2016. (Receipt no. Amip[protected]
I have tried their helpline, their emails, their websites, my credit card helpline, my netbanking and nothing seems to work.
All i want is to stop paying for a service i am not using.