Very Poor Service

I have had such terrible service, last month i was disconnected from the rain service as the service provider (Rain) mixed up my payments dates, non the less i then made a payment on the 30/12/2024. then on the 01/12/2024 Rain debits me, even though i had made a payment. i then call them and hold on for 20 min to which at the end an operator tells me she will email me. I need to be refunded ASAP