I want my money!!!!!

I am honestly disappointed by the Rain Company. Last week I upgraded for 5g and it immediately debit 499 from my account as per agreement, so I was concerned about the 4g debit order that I will get this week since I signed up for a debt order on the 25th. I decided to call Rain and query about the 479 debit order and I was told that they won't debit as they already took 499 from my account. Immediately as I disconnect the phone I get a debit of 479 from my account. So that's 499 +479 in 1 day. I call and I query instead I get response that message is sent to billing department and they will get back to me. Only call back I receive is people from Rain asking me how is the 5g working. Today I decide to call Rain after countless of times and I am told my tickets are closed for no reason. I request for management and he said "he will escelatate to billing department" and call back. We'll no call back instead an email showing me August statement and a guy telling me (Thank you for reaching out to rain billing support.

Kindly be advised that our services are billed in arrears, this means that every month on the 15th you are billed for usage/services for the previous month and your rain 4G sim card was cancelled on 17 September 2021 so this means your service is active the full month of August 2021 and we charged you on the R479 the 16 September 2021 for those services and you paid an upfront fee of R499 for a new rain 5G sim card plan you purchased, so this means it is not a double billing as you were billed for the services used on the 4G plan and upfront fee for a new plan.) what gives you the audacity to debit my account on a date that was not agreed upon. Not even call to request. This is **********!!!!!!