False information

Discovery double debited my account without me knowing when i call them the first time today after 8am I spoke to a guy who was not helpful at all. Instead of him giving me information he said i must send a bank statement because it can only show after 7 days on their side. I asked him to give me someone i can talk to because i can’t wait for 7 days i need to know why i was debited double while i was waiting he ended the call and never called me back. I called again and spoke to another gentleman by the name Nkosinathi he was very helpful and explained why i was debited twice but the issue is that they never told me and i am the one who called them on the 25th of July asking if they deducted the medical aid premium and the lady i spoke to on the day said to me because i am changing my medical aid premium to private capacity they will only debit R6124 on the 1st of september because i am billed in areas. I will not pay for something i was not told about because on the 25th when i call them they confirmed that there is no outstanding amount owing on my medical aid and then now they see the need to debit my account? I want my money other R6124 reversed back into my account.