Non response to the billing query

I have recently upgraded my package and the amount that should be debited from my account is now R349.0 In July R847.99 was debited from my account and I was too busy to query it. In August R505,42 was debited.

I contacted supersonic by telephone on 25 August 2022, the call centre agent sounded so confused and placed me on hold for a very long time, he kept on saying that he's looking for my statement so that he can explain these two deductions, we agreed that I will receive a call from Supersonic with all the answers. But I waited for the call and no one ever called me. On 27 August, I decided to send an email raising my concerns, in my email I requested that someone calls me so that I may understand these amounts.

Instead of receiving a phone call, I received an email from the billing team attaching a number of invoices, the email only had attachments, there was no content which was giving me an explanation. The strange thing about these invoices is that some of them had future dates and I am wondering why would I be billed for September connection in advance, again I sent an email requesting that someone calls and clarifies, and I have been ignored. This is unacceptable