Cancellation and ********* conduct

I requested cancellation of my 5G service on the 17th of May when I was informed that someone would be in contact. I kept the modem running to see the exact date when it would be cancelled (unknowingly continuing the service). I only received an email today (ONE MONTH LATER) apologizing for the 'inconvenience' and instructions what I SHOULD HAVE DONE in order to avoid additional cost. I find it very suspicious that I was only contacted today (32 DAYS AFTER MY REQUEST, but ONE DAY after yet another R999 was deducted from my credit card). How come cancellation procedures not be communicated timeously? How come the customer pays the penalties for RAIN slipping up? Not a company that I will ever recommend to anyone including very fluctuating and poor performance of 5G internet.