Fast to debit but pathetically slow to credit back

15/11/2021 i called Rain and requested they cancel the 4g i had with them due to me moving to another service provider. The move came from their IT technician who couldn't assist me with the signal issues i had. 01st of February i got charged for them not cancelling my contract. I made calls and spoke to Nelly who gave me ref ***3, Lisa, Sam and other agents ref is ***1. I have been told about the billing team and being emailed - received no call backs or emails. I'm now fed up of waiting and threatening agents who can't speak to the Billing team directly.. So here i am, rating Rain for *****ing my money.