Bad or no internet

Bronbergwisp installed a 6 mb wifi at my home in Desember 2017, since the installation it was never what is should be. We contacted them several times about this and they assured me that everything was 100% from their side. We had an appointment with one of their technicians on the 20th of January 2018 at 10:00 to come to our house to check if everything was fine, they did not even showed up. No call, nothing. My husband called the call centre at 10:40 to confirm, they said they knew nothing about this.

I rescheduled and made an appoitment again for today 3rd of February 2018, they did not confirm a time. A guy (did not get his name, blond guy with tattoos) came to our house to check if everything is working fine, unfortunately I wasn't home at that time (they did not confirm a time), my dad was there though. He did some changes on his laptop on our router and said it was fine now. He asked my dad to sign a paper and pay R650. My dad said he cannot sign the paper and he must wait for me, I was on my way home 10 minutes away. He suddenly started shouting to my dad and said he is in a hurry and he will not be liable for the payment and that my dad must pay up, he is in a hurry and must go. He was totally rude and unprofessional.

I was not once informed about this payment and we still have no internet!!!!

I have the screen shots of the speeds test on my fone, the last one I took 15 minutes ago at 1.20. It never was 6mb, what I should get.