Ongoing internet problem

I have been experiencing bad internet and telephone service. For the past eight days now I have been having problems such as I cannot make calls, cannot receive calls, intermittent internet connection and no internet service at all. Now my landline is crossed with another and now when the other landline receives calls I can hear everything that is being said, so much for privacy and having my own line. Working from home is now unbearable. The last call centre agent I spoke to puts me on mute a few times and that's not good telephone etiquette.