Pathetic service

The past two weeks my internet connection has been going offline a few times per day. As per the information I received during installation I tried to phone the technical support number, all to my surprise it doesn't exist anymore. Did I get notified about change of contact details? No! Absolutely no email, no update on social media nothing. I finally get their new technical support number and every time I phone I hear the same excuse, they're doing maintenance on the router but they cannot tell me when the problem will be resolved. Now my question is why is too much to let your paying customers know 'We are doing maintance you will experience problems with your internet'? Why do I have to hear the same excuse every time I call and no one can give me a clear answer or resolution. The service is pathetic and your operaters are not very eager to provide your customers with clear answers and doesn't seem to know what the actual problem is. All I hear is 'Uhm'?! Would really expect to get proper service from an service provider.