VOX substandard service - not being taken seriously

I have had a VOX fibre for 3 years which I compare to a Telkom fibre I've had for 6 years, both of which I still have. With the Telkom fibre I've had no issues including speed and resetting from time to time and it the opposite with VOX. The property is a small Guesthouse and my home/office. I am particularly upset now as my IT Consultant advised me on Tuesday 25 Mar 2025 that my VOX fibre was not delivering the speed nor range from the router and I have installed a number of TP Link extenders/mesh units and an additional router which is the same equipment that VOX uses (so they cant claim they're substandard) and requested in person on the VOX premises that they install new up to date router which they seemed to agree with. The outcome is that I received a call later on Monday where they proceeded to do tests and update software. They followed up on Wednesday to try do tests but as I informed them in the 1st call at about 08h30 that I and my IT consultant would be at the Solar exhibition which my consultant had forgotten about but they did call him at and assumed that he would be available at 11h00 which was not the case as we had previously informed them and that they should follow up today at 11h00 with him. So today at about 11h00 they called me and fortunately my Consultant was with me so he stressed that they needed to do an onsite test if they weren't going to update the hardware. Shortly thereafter, we found that in VOX updating their software, all of our extenders/mesh units and additional router were not receiving internet so my Solar system was not being managed and my Guests attempting to work were unable to do so! I followed up with 3 or more calls requesting that they fix the problem remotely or come to site to fix their problem. As I said that their apparent (they did not speak to me) appointment for 11h00 tomorrow was not acceptable, they said that they would get their technical department to treat it as urgent and call me back shortly.

NO ONE CALLED ME BACK AND NO ONE ATTENDED THE PREMISES.

My premises are less than 2 kilometers from their Johannesburg office