xfinity REPEATEDLY failing to fix XRE-03056 for WEEKS! 🤬

I’m WAY past aggravated after putting up with WEEKS of glitches through FOUR swapped receivers, multiple service appointments, and feckless techs and supervisors NOT solving this problem!!  
🤬🤬🤬

This is completely unacceptable service to have random/arbitrary channel switches, losing all buffer, and lagging/frozen receiver menus for over a month.   

Meanwhile, none of the few other related posts online provide an answer, although it’s evident that this has been an issue going back several YEARS.  

[Edited: Language] does it take to get this actually permanently fixed?!!  🤬