i only need my internet to work 100%

Dear rain, This is my second complaint due to bad reception, 1. I have moved from the main room to my children’s room to the kitchen to the everywhere for signal . 2. Times from 16h00 to 20h00 my signal is so bad that it keeps on dropping 3. I have restarted the device so many times. 4. I have logged calls but no one comes back to me to help 5. I feel very sad that I pay for a service that I can’t really use and I’m work from home and I depend on this router as specially from 17h00 . 6. My router was changed to a newer pro model but the same thing is happening , 7. Is it possible to have a booster or an outside router or something to help me in this matter 8. Please can someone help me please 9. *** & no feedback