Loss of internet nightly

Why is it that internet is not available every night now? This is beyond ridiculous that the gateway shows a good signal but I have no interrnet. I didn't sign up for this that's for sure! I am moving the router around, have a night gear nighthawk that I use to take the burden off the T-Mobile router, bought a cell signal booster and still face this nightly! I work from home from time to time and rely on the internet working to do that and it needs to be reliable. How much money do I have to spend for this internet to work properly? And I don't want to be lectured about cell phones and priority, if T-Mobile wants to be an internet provider then they need to stop the \and get it together. I have cell phone and internet with them and still service sucks! Anyone alse feeling this pain as well?