Think the drum shaft is broken, is it repairable Bosch Maxx 5?

My Bosch Maxx5 has gone wrong.
I usually do a 30 or 40 wash express wash,once a week.
last week I did a 60 intensive stains cotton wash. Took a
long time. At finish Drum & garments contained
particles,looked like concrete or plastic body filler.
Drum was quite difficult to rotate by hand - felt some
resistance.
I ran a rinse cycle,ok until the spin - some smoke in the
drum when I opened the door?. I ran a load at 30 express,
bit noisey but acceptable until it reached spin cycle -
deafening noise and unusual jumping around. I was worried.
Again smoke in drum when oened the door, drum almost
impossible to turn by hand - sounded like a grating noise,
drum and clothes contained similar plastic bits and what
looked like plastic gratings!.
What is happening? is this repairable?.
Machine looks Ok, like new, at back and from the top. I
bought Bosch for German reliance, previous washer was a
Zanussi and lasted over 15 years. I am NOT HAPPY.