Indian Oil Corporation [IOC] — non functioning of my debit card and credit card

Address:

Mumbai City, Maharashtra, 400060

Dear sir today evening at 6:53 pm i filled cng. At ioc petrol pump at jvlr near oberoi splendor building. But while paying with credit card through swipe machine showed error and then i tried my debit card which also showed error. Iregularly use my cards in your pumps never happened like this. I paid cash and straight went to atm and withdrew money. Without out any problem. What ifeel petrol pump is cheating and knowingly harassing customers. And as their change money has been stopped earlier they charged extra amount due. Change problem now cards have stopped. That tree money. They are troubling us ihave also written complaint in their book also please take strict action as i have used both cards today with out any problem.