Customer Service is becoming a disservice

This customer service process is not acceptable anymore.  Like everyone with Xfinity, we pay a fair amount for the services provided.  Most of the time the services work as expected and when there is an outage, the app does a good job of knowing that it is an outage and not an issue with the equipment / residence.  At $292 / month, we pay $3504 per year to XFinity and I've been on an endless chat where the customer service agent is just doing their job by running through the checklist to try to fix the pixelated screen and broken sound glitch -- on both TV / boxes in our house.  I'm here, knowing that I've done FAQ checks, resets, refreshes, etc and nothing changes.  If they aren't showing an issue with the boxes, IT NEEDS A TECH visit or just swap out all the equipment.  For the number of years we've been with XF / Comcast and the amount of money paid (for typically good service), wouldn't it be easier and faster to just listen to the customer in some cases.  I checked every visible connection and went on the roof to see if the main supply line was problematic - it is frayed from rubbing on the roof but likely not the culprit.  I can't access the power line splitter or I'd have checked that too.  Please send someone over and solve this maddening issue.  TV time is usually a relaxing time; it is currently an anxious time while I hope this thing gets fixed.  It's been going on for a week and I had hoped it would fix with some magic software update.  Now I've spent my whole evening digging around the house, swapping to a new box, resetting, and all the other stuff the CS chat person could do remotely before cutting off.  We are moving in a couple months and do have other options that can provide the same service / information / channels / etc.  Also, our phone line hasn't worked for years but it's built into the triple play plan and the CS people say it's cheaper to just leave it.  As I write this, it feels like they're being deceptive.  I no longer see value to Comcast / XF if they can't have CS agents who can figure out what needs to be done in significantly less time, and preferably on the phone.  I couldn't find a phone number anywhere.  And I can't find an email address to send my complaint.  I doubt I'll continue with XF if this glitch issue can't be resolved quickly and since I don't have hours to spend on a chat, I don't have high hopes.  I RARELY post anything public but this is the only avenue I could find to hopefully make XF aware of this major deficiency.