Failure to resolve payment related complaint which result in service disconection

I make payments at the end of the month and every 2nd day of each month I receive an alert that my services will be disconnected due to missed payment and indeed on the 3rd day the services will be disconnected and I will they give me a a promise to pay on the 26th or 16th of each month.i sent multiple complaints to their support because I feel like I am paying double each month. Till this day i have not been assisted instead they will send me an email confirming that the issue has been resolved whilst it hasn't. Their system will reflect the billing date to be in the month end however my services will be disconnected on the 3rd day of each month.i sought clarity multiple times but the service consultants are arrogant and pathatic when it comes to customer service.