Vinted review: Theft by vinted

I am a Vinted member, I purchased a pair of Adidas Campus, They went missing in transit (possibly stolen by one of the staff). Me and the seller were in amicable communication regarding this, Vinted accepted that they were never going to arrive, they refunded the seller, then because I ACCIDENTALLY clicked the wrong button said I could go and take a hike, I will not get my money back. Even though they KNOW they have gone missing through the couriers they use. I think this is despicable and pure Theft. I will not back down they know they are wrong.