RAIN *****ing money and refusing to Refund

Rain they are taking customers for granted and undermining them. They still claim they have not received a payment I made last week Friday after sending them countless proof of payment from my bank. They suspended my service because they claimed they didn’t get the payment whilst they did. I had to resort to paying again using my credit card in order to get connectivity. Now they are refusing to refund me because I have made two payments in the same month for the same thing. I have send countless email to Tess who is the team leader they say and every day I phone it’s the same story and no one is really prepared to resolve this. They treat customers badly and ***** money from them which is not right. We also work hard for our money and deserve fair equitable treatment