Incorrectly billed

On the 25th of May 2021 I was billed for the service I was receiving from rain as per the initial agreement. On the 1st of June 2021 , I was again billed for the very same service I had already paid for on the 25/05/2021. I was told that this was error from their side that I was billed on the 1st again. I received an email stating the money has been reversed back to my acc and would take 7 days to reflect. I wasn’t happy with this as it was an inconvenience to me . Gave them the benefit of the doubt and waited. It’s been over 7 days and I haven’t received my money. I would also complain about the internet speeds that aren’t reliable but this is me being a loyal customer with the hopes that this will improve over time.