Shocking customer service

I struggled to come right with MWEB right from the start. At that point, somebody decided to cancel my order for Fibre without making contact with me to see if that is what they wanted (despite them having emailed me when I placed the order and knowing that that email address was the correct one). When I finally got that fixed (5-days-without-internet-while-working-from-home-later), I noticed that they had put two accounts onto the same username and have charged me 2X what they should have. I have tried to call about 7 times. It just rings off most times. Finally after waiting, 16 minutes for somebody in billing to answer the phone I explained my dilemma and the call got dropped. I cannot get hold of them again! Just to add insult to injury - this is NOT toll free number and nobody bothers to call you back to see if they can sort out your problem for you (despite your number being on the system).