AYAL26.38 CHARGE FOR COMPETITIONS!!!

I HAVE BEEN BILLED ?11.38 IN MARCH 2016 AND ?15 FOR APRIL 2016 FOR ENTERING COMPETITIONS WHICH I HAVE NOT ENTERED!!! I CANNOT CONTACT THEM VIA PHONE AS THE NUMBER DOES NOT EXIST!!! I WOULD LIKE A REFUND AS I DO NOT ENTER COMPETITIONS ON MY MOBILE. I HAVE GIVEN MY EMAIL ADDRESS FOR A REPLY BECAUSE I AM WARY OF GIVING OUT MY MOBILE NUMBER BECAUSE OF THIS!!!