Disappointed of the service

My services has been terminated due to the fact that there's was no payment for the month of May which i do understand. I made a payment on the 21-06-2021 of 450+250 and the next day i was called by a collections constlant telling me that i must pay R450.00 and i told her that the payments where made already and she wanted me to send proof of payment which i didn't because i was busy at work. I've used the DSTV app to make a payment which i always do. Now my services has been suspended and my payment due date is on the 26-06-2021. What happens to the days that i paid for and my services are suspended. Im so disgusted by the service.