toeytei

so I took my freewheel apart to clean it and replace with new bearings. I didn't have the tool to unscrew the part that's attached to the wheel (if you know what I mean) so I took it to a local shop (I needed the broken spokes to be fixed anyway).
when I came to pick it up he ended up replacing with a new freewheel.
the bike shop says you can't rebuild a freewheel because they are pressed fitted from the manufacturer. once you take them apart they are broken.
I've seen multiple videos of how to do it and it didn't seem hard. I mean you just put them back together what's the big deal.

so is he just ripping me off or is it true that once a freewheel is taken apart you cant fix it.