Service cut off when I've already requested a debit date change prior

I specifically changed my debit date for rain on the 9th of April to the debit date to be on the 1st of May going forward instead of 25th of every month and to my surprise my account has been suspended because of non payment and its only the 26th of April instead of 1st May. I called the call center on the 25th of April and spoke to Xoli who was very confused and said she will call me back but never did and I called again today and spoke to sizwe zungu who was to find out from his manager why its saying my account is over due when it's been a day of non payment (when I've already requested the payment to go oon the 1st instead of 25) told him I can t be on the phone for long as I also got work to do and may he call me back when he has feedback and its midday and still no one has called me back. What's frustrating is that I work from home so I need to have Internet and because I made this deduction date change prior but still they continue to deduct when I've changed my debit date. I am now without Internet because of my loyalty to rain when everyone has said change to fibre. I AM NOT HAPPY WITH THIS AT ALL AND CAN SOMEONE PLEASE HAVE THIS RESOLVED ASAP my rain mobile number is ***