Mweb charging me high fees for nothing

I app**** for a R199 LTE sim only deal on the 5th of March and kept getting messages that the sim card is with the courier department. During the week of the 7th until the 11th I received no communication whatsoever, I then called the number provided on the 9th of March and was told that I can only get my sim card on the 14th of March but on the website it does not show that I will receive my sim after so long.

After receiving the sim card I got an email that the sim card is now active. I used it properly and received another email on the 15th telling me that I will be billed R269 Rica delivery and that they need to take the money within 5 working days... 16 March I received another email with a statement showing a different amount, additional money was now R115.55 named invoice and balance making it -R384 named "Thank you"... I was confused and decided not to call.

Today I received another email saying that I have an unpaid debit order, my bank account has money in it so I don't understand whose fault it is that they failed to debit my account, I am told that my account is in arrears and that I need to pay R384, for what?

1. This sim card was only activated on the 15th of March. 2. I am supposed to get login details for my account, I have received none of that. 3. When I check my balance I find out that I have less than 30gb of data, there's no way that I finished 20gb with 3 days of using this sim card especially night data because I was using my other Telkom Sim card for night night, so this shows that I was never provided 40gb that I am supposed to be paying for. 4. At 08:30 I tried to call the sales and billing department and all calls automatically end.

I need someone to explain this nonsense to me, there's no way that I will be charged such a ridiculous amount for data... someone should call me because I took the initiative and called but your calls did not go through.