Poor Cell Reception in my house. Do I need a Cell Signal Booster? Any recommendations?

We have almost zero cell reception where we live. It has been this way for 8 years now. The cell booster supplied by t-mobile works fine about five minutes out of 24. Outside we are lucky to get one bar. We have contacted t-mobile numerous times over the course of the past 8 years and nothing has changed. I thought about buying one of those expensive weeboost systems but the problem there is if you only get zero to one bars the booster isn’t going to help. So, since t-mobile will not do anything about this we are actively looking for a company that will enable us to actually use our phones that cost enough to feed ¼ of the world’s population.