Mines gone in again for third party warranty work on a seized/sticking caliper. Took it to a nationwide auto repair/service chain, gave a list of symptoms all pointing to a caliper seizing (the obvious one being the one wheel coated in brake dust and dust being in the door shuts and sills on the same side, all other wheels nice and clean). "mechanic" said he took it out on a run and it seems fine, I explained that it's an inconsistent fault and was met with, "if its not faulty when I test it, then it doesn't need changing." 10 days later my partner is stranded on the side of the M4 in tears with smoke pouring out of the same caliper, and now have a severely warped disc and glazed pads.
