Afrihost creates fees and invoices for no service

I'm a customer since many years with Afrihost... ADSL, datas and mobile datas when they suddenly offered us a new product about a week ago.... "fixed wireless" We wanted to give it a try and ordered and paid R999 for the device plus data package. When we got it, it didn't worked well and we contacted Afrihost for a technical support. We had chats with many guys from this call center, nobody had a glue what they have sold us, nobody was able to help and on every single call we had to start from the beginning. They wasted our time and we decided to give it back after only 6 days. Afrihost would have taken it back but wanted to charge us with R999 fee plus R99 collection costs....that means...they get the device back, we paid for datas and for the device which wasn't working and they still continue debit us with fees for this disaster!!!! It's ******** that they just charge what they want and I started thinking I should charge them a fee for the trouble I had during the last days!!! I kept the device and canceled collection immediately...now they seem to insist to charge me with collection fees without collection...it's unbelievable. I wrote this exactly like here and now they stopped answering...I logged in several requests to credit my account again with the collection fee and to stop look to customers accounts like a self-service bar!!! I'm waiting for answers since two days now...they simply not reply and simply continue charging me. Be aware of that Afrihost seems to grab your account as soon as they get a debit order...even for service they never provide...it's very sad, after so many years I'll complete leave this company behind.