WORST TECHNICAL SERVICE EVER!!!!!!!

I called the call centre on the 20th July for assistance on slow speed, they asked me to test it with my computer, I told them I can't do that, my laptop has not got that plug-in point, I need a technician to come out. I pay for 50mps and getting 0.78mps Micheal Mkize was the person whom I dealt with, he said he cant log a fault, it will be cancelled because I cant do the test with my laptop. After a fight, he logged a fault, but got no word from Supersonic. I called in today, 22nd July and the lady told me my case has been closed, the technician did a off-site test and said I'm getting 98mps, which is utter nonsence, as I couldn't even send a whats app message this morning. I have just been told the technitian is off today, and I need to this all over again- I need to connect with my computer...this is surely the worst service EVER!!!!