Wow that stinks.. but it hit close to home , so I have to tell this story LOL.
Shortly after starting roll hunting halves, the tellers kept telling me I could just
dump them into the coin machine, and didnt have to rewrap them all to bring them in.
So I did that. First time, machine didnt count right, something rattling around broken.
Second time, it got jammed or something. 3rd time, my wife returned them, and the machine
broke, and she spent an hour in there, as they retrieved them all and hand counted and rolled.
Ever since.... I return them rolled in the box

They still dump them into the machine for counting
and shipping them out, so I just let them break it, instead of me. I kid you not - Ive seen the
machine repair guy there 10 times or more already, and a couple other times, the machine is torn apart,
out of order signs etc LOL.
The last instance, the teller lady was saying goodbye to the repair man, and she said something like "job security".. and he laughed and said "Yep".
Half dollars must just destroy the mechanisms in there hehe. Thats alot of weight, 1000 halves spinning
around on those metal counter tabs .
Anyway, thought that related to the maintainance thing. I truley do believe they probably are racking up
repair bills LOL.
Good luck !