Internet dropping connection last few days

Everything has been fine for the last year with little to no outage. However, the last week, I have woken up to no connection and “your modem is offline”. AI is no help, restarting the modem and router multiple times and then things seem to get back online sporadically. All runs fine until, like this morning, offline again. I restarted the modem twice and router once. All the latest firmware and nothing has changed inside the house for connections, cables, or hardware. 

last Friday when the modem finally got back online, the AI said there was still a problem a tech needed to come out. Comcast had “no issues or outage on their end”,  scheduled a tech for the next available day. However, within 2 hrs or so I get a message saying “your issue has been resolved, do you want to cancel your tech visit?” They claimed no issue and I assumed something was fixed, so I cancelled. Now 2 days later I wake to no internet again and the same restart [Edited: "Language"] to finally have the modem get back online. 

this has all been only in the last week and very frustrating as there are no live people doing support. I have a tech scheduled for tomorrow again. Any suggestions or thoughts from others having any similar issue? 

update:

6:38am- we didn’t find an outage associated with with your Xfinity service. 
8:21am - we fixed the issue impacting your Xfinity internet in your area. If you are back online, you can cancel your appt. 
Same as last Friday, Xfinity/comcast has no issue………and then we FIXED the issue. [Edited: "Language"] 

rinse and repeat