Vox Telecom horrible service and no internet

I’ve had a horrible experience with Vox! I work from home and my internet is very unstable, sometimes it works and other times it doesn’t work completely. I’ve been complaining for months and they just ignore me but very happy to take a debit order monthly. Their technician advised on getting an extender. I did that and still their own solution doesn’t work. But that’s not the worst part, the worst part is having to call them every week to say the internet isn’t working and they do nothing about it. Really pathetic service.