Rains inefficient not to say shocking service

I paid my rain account twice on the 26/07/2023. No refund available but according to them all of a sudden my account was in arrears and now my refund has apparently been used for July 2023 I cannot understand as i have phoned since the mistake and now been told they cant refund but up till now my refund from the 26th July would take 7 to 10 days. Now all of a sudden i was in arrears. They wont put you through to billing. There are plenty of references but I dont believe the people who answer the calls are efficient at all.

Very very frustrating experience for sure.....Rain has got big and the dont care any more