Yes , but however retarded I am I asked the lovely community on cc what my legal rights are and where I stand . I've had 3 helpful answers the rest of you guys should be on reddit gatekeepers. Pure toxic horrible people. A fellow cyclist asks for help and your only help is to chuck a pile of shoot on him . Nice community 👍
So you say you placed it on the turbo to try it out, my first action would have been to look at the chain if I thought it looked slack, turn the cranks slowly by hand to check for it skipping about then go through the gears before pedalling it, looking to make sure that the rear derailleur lay correctly at both extremes of it's travel and there were no stiff links, &, the quick link is joined correctly, any faults & I'd have been straight back, but I wouldn't have been back after the very first cock up, 25 years ago, if they're so bad I find it hard to believe they're still trading, but they will have public liability insurance, so court it is, because he'll deny everything and you put it on the turbo and must have given it some beans to rip the front mech off, past experience should have told you to check, check and check again before riding it