Phone service and Wifi it's not working for a whole month

Since the beginning of May, I've been experiencing issues with my phone service and my home internet. I have reached out to customer service for both issues and their employees have been nice and helpful but my issue hasn't been solved; I have done everything with my phone they did a cleaning on the Esim card, they have made me reset my network settings, they have checked the area for any issues and every time they have told me that there's none. When it comes to the internet I have even changed for a new box before I used to have a black box, now I have the white one that supposedly was the issue, but also that hasn't worked either. For the wifi, I have reset to Fabric multiple times and they have done some stuff on their own to help with it but the box keeps saying there's no signal. I do not blame the staff because they have been patient and nice but the company. I do not want to sound like a Karen but I have been a customer for 4 years and it is disappointing that for a month I have not gotten any solution but still they keep charging me for something that is not working properly. Unfortunately, I might have to switch to another company something I didn't want to do because I like T mobile but this has gotten too long and I'm tired of calling and not getting either an answer about why this is going on or how to fix it.