MTN Wifi R269,00 per month

I paid for a Wifi Router on the 27th April R269.00 plus a pro rata payment as it was a few days before the end of the month. MTN tried to debit me on the 4th May ****erally a week later) with a further months subscription of R269.00 which I returned. Sat on the phone for an hour waiting for someone to answer who promised they would change my debit order date to the 27th May (which in my view is fair) - NOW THEY HAVE CUT ME OFF - WHAT A FARCE!!! Disgusting service!