Very Bad customer experience

I have a scheduled payment that goes off the 1st of each month. Last month I did an upgrade around the 25 and the system allowed me to upgrade, however after the 'successful' upgrade I couldn't watch any channels till the next debit date, I called a number of times and was later told that the debit order is already scheduled to kick in therefore I did not pay the amount that triggered the areas. My channels only started showing on the first after the scheduled payment kicked off. Today my account is suspended because of an outstanding amount, which according to our agreement was debited on the 1st of June. I was not rembursed for the inconvenience in May and now I am going through the same experience for their *********** system. Why does the system allow an upgrade in the middle of the month and does not ask for an effective date of the upgrade? Why am I being suspended 13 days after the schedule payment on something that is not my fault?