Paying for Fiber 1000 - only getting 9Mbps into gateway

I've been complaining to AT&T for over a year about dropping network, resetting modems and slow speeds.  Last week - after complaining that I need to reset the entire gateway at least twice a day - they sent me another modem saying my last one (that they sent me not quite a year ago) was outdated.  Installed and then checked speed.  Smart Home app said there was an issue - never saying what the issue was - and that a technician had to come out.  Earliest appointment - 5 days later.  I work from home!! Not acceptable.

Then, the Smart (Stupid) Home app decided that a firmware update was needed.  20 minutes later, and I can barely get anything working.  Changing a TV channel now takes about a minute - never mind the buffering that I now have.  Computer websites - even sitting right next to the gateway - take several minutes to download.  I turned off wifi on my phone - TMobile cell service is faster. 

Speed test - barely 9 Mbps into the gateway (when the AT&T speed test actually works).....less than 1Mbps to a device.  I'm now using my cell phone to take work video calls because I can't trust AT&T internet.  So, it seems like I've been paying for 998 Mbps into the house and getting 1/10th of that speed now for probably over a year.  When they sent me the last modem, I specifically asked them to check the lines outside my house and into our new development.  They claimed it was fine - obviously there's an issue.  

So I wait.....and went ahead and ordered TMobile Home Internet.  There's no real load on the house - one person, no gaming.  TV, music streaming, and work video calls - mostly never all at the same time.  Why am I paying $85 / month for this crap???