I took my old phone in to a well known highstreet shop to trade in. Aside from one very minor scratch right next to the charging port, it was otherwise in mint condition and still had all of the original films and protectors on (it had been kept in one of those encapsulated cases all of its life). They messaged me 24 hours after dropping it off to say they were reducing how much they were going to offer me because they wanted to replace the charging cable for it. Given they were going to be retailing the phone for £200 more than they were giving me for it, I told them I wanted it back.
I've been given it back with the intention of selling it privately and they've taken all of the original (manufacturers) protective films off. I was legitimately going to reference how all of the films were still on when selling it to demonstrate how well it'd been looked after, and now I can't.
AIBU to make a complaint that they've done this before they'd finalised a price?