First experience of poor service from Afrihost, should I be worried?

I would like to take a moment to express my frustration with Afrihost regarding the manner in which I was billed for June, 2020. I am on a Pure Fibre 100/10 contract and I am billed around R1150 per month. All seemed normal as on the 1st June, I was debited R1139. To my horror, I was also billed R1149 a short while ago. Almost minutes after the money was taken out of my account, it was returned. I am quite annoyed at the incompetence in this regard as I am charged an unpaid bank fee which I would like Afrihost to refund, since this is not an error on my part but rather but rather a reflection of a poor quality of service for someone who has not done their job efficiently. Please would someone highly capable assist me with a refund. (Please note that I have a bank statement to prove this sequence of events and I am happy to make them available for your perusal).