Poor payment allocations - bad service

Cell C has given probably the worst customer service from their account department to date. I've been a long standing clients of Cell C and when I've missed some payments and requested to a payment arrangement; your contact center only contacted me twice since my request in January 2018, which was calls i could not take at the time.... as i run a business and was in a meeting. Furthermore payment has been made for more than 50% of my outstanding balance Cell C has terminated my line without communication. The legal department still says that my account is 90 days in arrears which is ridiculous; and he also says that I will not be able to get my line reinstalled after all my payments. The inability to not allocate payment properly is not my fault. My proof of payments were sent three time for proof of ********** (all in one PDF document) and yet they accounts departments only allocated two out of the three payments. No text messages was sent nor emails no communication was relaid to myself. Not even your call center agents at the customer service department notified me that this would happen after all my calls and my payment requests. This is unacceptable as far as I am concerned. This line is due for an upgrade this month and the last payment was supposed to be done before the upgrade, yet my line was terminated without notice. This was a personal line that turned into a business line.