unsatisfactory service

good day last year i moved into a new flat in Benoni on moving in we noticed there was a fiber connection installed my brother recommended webafrica as he was using their services i went online on my mobile to register and signup with webafrica ,i kept getting kicked out while trying to signup because of network signal witch resulted in getting a message from webafrica flagging me as *****. my wife then went online and proceeded to do an application at the time we were using one account where both our salaries were going into. then we received 2 routers from webafrica one in my name and one in my wife i contacted them and returned the one that was in my wife name to the office in sandton and was given proof of the return and was assured they would not bill me for it but the debit order was still being put through for both accounts on the 25th when i told them we get paid on the last day of the month i contacted them via whatsapp because the billing department does not reply to my emails the consultant on whatsapp told me she cannot change the debit order date i asked her to get the billing department to contact me via email or to call me she said it has been logged till now they have not contacted me i have **** a payment of R748.00 which i was told by the consultant is the outstanding amount on the account. Now i am getting emails telling me i have 4 days to return the router or i will be billed R999 for it and R1999 for lte and the router will become my property i have sent numerous emails in respond to this and to change the debit order date as i have to pay the charges to webafrica and my bank due to webafrica debiting my account on the wrong date please assist me thank you darryl