Multiple T3 time-out errors over the past 3 weeks

I understand that T3 time-out errors are common and typically can go unnoticed unless they appear often. I have seen anywhere between 10-15 T3 time-out events per day over the past few weeks, and while power-cycling our modem does fix these issues for the time being, we still lose connection 3-4 times a day because of this. I have chatted with many agents and done every troubleshooting step they have asked (and some that I have read on the forums/online) to try and solve these issues, but am always met with "your modem seems to have a few errors, would you like me to send a refresh signal?" 

Today, 6/25/2020 I have tried to contact Comcast through phone calls (it wont allow me to move past the refresh signal, the callback feature is not working - it says 'There is an issue connecting you to an agent right now'. I have tried DM'ing them on twitter and have not received a response after ~30 minutes, so now I'm trying here. I'm supposed to have a technician scheduled to come out via a chat with an xfinity agent yesterday, but there are 0 scheduled appointments for me.