Enough is enough!!!!

I've been paying my MTN account via the MTN App. Lately my payments is just "missing", resulting in my line being suspended. This after I called them, and complained, and also e-mailed the proof of payments to them. The best part is 9/10 times they do not have reception or their consultants cannot speak proper English...what a joke. They are wasting my time, and costing me money...seriously!!!! My last call reference ***