we have been i a simaler thing with a club we run and trust me theres bugger all you can do unless you have a good few quid AND I MEAN A GOOD FEW QUID
ive seen this sort of thing going on for years with the drain cleaning guys you must of seen them ................0..0..0.000.0......000 drain cleaners !
one good company here in the north east as been going for 30 years took a compeiter to court for the same thing as you , it took four years to get there, the day befoure the hearing the other company went bust

swopped it all over into his wifes name leaveing my friend with 50k worth of fees to pay ! and guess what the new company his wife is now running is up to the same tricks but my friend would have to start right from the beging again and put anthor 50k on the line ! so he as just given up
can you afford to take them to court and lose the cash ??