Really terrible service from support and my issue is not resolved.

I have been an axxess client for over 4 years, Had my VDSL 40Mbps line with them and all was great, I recently switched to a Premium 100/100 uncapped line with axxess which is quit allot more expensive than the previous, and I have not once gotten more than 50Mbps since i got the line, today i got home from the office, needing to log in again seeing as I work from home every 2 weeks, and I am getting a 3Mbps download speed???? I call the call centre and get told everything is fine on their end and I need to carry my very expensive Gaming PC to connect it directly to the Vumatel box so I can Trouble shoot??? This is not my Job, I do not pay Axxess every month to do my own troubleshooting, then While I am on the line I can hear the Support agent Put the phone down on her desk as apparently what the customer wants is not important. the Agent was Yandisa. on Saturday 26/10/2019 @ 18:07. I would like to be contacted by a regional manager or higher as I am now Fed up with paying for a service that i am not receiving!!!!