Worst network provider !!!

I have officially had it with MTN !!! I have reported you guys last year on hello Peter I'm still waiting for a response. I load my phone with Airtime not even a second, a f#$king second is it gone !!! MTN you guys have no sense of client service, and no sense of been a network provider.I pay my phone every month and on time for what?? I have all my copies of payments, all my copies of extra Airtime I bought to prove everything, and not even a second after loading Airtime it says data duplition. ***** you guys every single one of you, no one gets back to me, no one ever answers the calls, all I ever have is a flippen hold tone. I am so ****ed off with you guys its unreal. My mom went to hospital and I bought Airtime to get in touch with her and every time it disappears,,, like I never even bought it!!! I am so tied of no one explaining them selves, MTN us as paying clients, hell us as the public read articles of you guys *****ing and here is the proof...explain yourselves. Stop hiding like Zuma and explain. I can't even refuse to pay my phone until this is sorted cause unfortunately it's still on my dad's name and I don't want him to have a bad name! MTN you guys are the worst