Intense pulsed light epilator Silk'n 7

I've been ordering from back market since 2020 and I've never had any problems, whether with products, returns or refunds, until today when the seller, JB CE, tried to scare me by saying that I hadn't sent the complete product, but back market still refunded me. So I'll continue to buy from them, but if I can give some advice on film when you unpack your parcels and when you send them back to avoid this kind of problem.