Xumo stream box issues

It seems the Flex box, now replaced by the XUMO Steam box, are prone to a multitude of issues.

I was using a Roku until June 2023 when Hulu stopped being supported on that model, so I thought I would switch to the Flex box since it's free and gives Peacock as a free benefit. All was well with the box until early December, when it started having issues with the Dolby digital stream via the HDMI; it would not send the signal, requiring multiple reboots to get it to comply, and often with a ten minute delay, in which the signal would go in and out for several minutes, often with jarring loud noises sent to the speakers. Tech support said go get a new box, which we did the other day, now the XUMO STREAM box. It worked well for ONE DAY, and now does exactly the same thing, IN ADDITION TO OFTEN FREEZING UP WHILE IN ACTIVE USE (the remote stops responding, so to end a show I must unplug power to the unit).  Is there anything to be done other than getting ANOTHER box? Is there some reason Comcast/Xfinity struggles so much with having quality hardware?