WiFi Issues…still.

Since around August I have been experiencing multiple disconnects each day and getting about 4% of my speed on average. They used to last for a few seconds and reconnect - still slow though. Over the past month they have been increasing in frequency and length. I can't access the net for more than 5 minutes with it slowing to a drag or completely losing connection.

It's impossible to work from home, play video games, watch videos when the connections drops every few minutes or is dropped for long intervals.

I have had three techs out, one replaced the line to the house and modem. The second replaced the modem, again. Lastly the third replaced the modem and a new line from the exterior box. Even he was baffled as to why the speeds were slow and intermittent. Wifi was working for months on end and now a full month of irregular, intermittent, and slow service. Even the upstairs tenants have issues with their Xfinity service…same thing. 

At this point I'm convinced it must be from the line from the street or the pole. They said it’s an older hub but should still function. I’m just at my wits end. Periodic statements about work in the area…but three techs and new lines in the exterior and interior later and still with issues. 

I’m patient. But a full month of spotty service is unacceptable. Any ideas?