Wrong data package

I recently changed my contract with Mweb from an LTE to a 20mbs fibre line. Vumatel was excellent with the installation of the fibre line and it was done within 24h. Unfortunately that's when everything started going wrong, after supplying Mweb with all the relevant information I was told it would take 48h to activate which I excepted, the 48h turned out to be 72h and after testing my line I found I was still on a 10mbs connection. I have tried on numerous occasions to explain to the consultants my problem but every time I am being put trough to some department where your only option is leaving a message, now, I'm sure I must have left 10 messages already without anybody contacting me and I believe it is only an administrative action which needs to happen. I am not sure if Mweb will take less money when debit order time comes, I believe not so please fix my line for which I'm paying R829p/m. This is unacceptable