Internet Connection in and out constantly

We’ve had this problem for over 6 months now. We’ve had 2 techs come to “fix” the problem with no resolution. Our internet connection is constantly weak or down completely. When The cox WiFi app runs an internet connection test it says 1168 out of 1000. 119% yet when other internet connection test apps such as ,speed test, try’s to run an internet connection test it measures no connection or in the 30s-40s. We just want what we are paying for and it isn’t being provided. Any advice?