Obsolete Cable box

I just posted a comment regarding my cable box issue but I will repeat it here.  I received a letter from Xfinity stating that I would need a replacement cable box due to upgrades on the system in our area. This is a rural area with previously very outdated cable service.  The updates made my (very) old cable box unusable.  I called the number listed in the letter and scheduled an appointment to replace the box.  But no one showed up.  Then hurricane Helene hit.  My area was not badly affected.  Our power has been on for a week now and my internet service provider (not Xfinity) restored service within 24 hours.  That was over a week ago.  Since then I have scheduled two more appointments for xfinity to replace my cable box.  No one showed up.  I did however receive a text telling my there was no outage on my line.  But my problem is not with my cable line.  My problem is my cable box no longer works because Xfinity finally upgraded our old, outdated service.  I takes forever to schedule an appointment with Xfinity and to have three appointments made and cancelled without even contacting me to find out why I scheduled them is extremely frustrating.  I have been a loyal bill paying customer for decades and it is sad that I would be treated with such disregard.  I pay over $130 a month and have had no cable service whatsoever for the last two or more weeks.  If it weren't for the fact that I have a reliable internet service I would have no programming options.