Lost my belongings at discount shop Jeppe

I went to jeppe to buy something. I entered carrying 2 plastics. I left them buy parcel counter. After few minutes l came back l found out that they gave someone my plastic. There was a bag, with power bank a perfume my shoes and a hat inside. I lost my things just like that. And those Portuguese were very rude. They said its not their fault mistakes happens not even to say sorry. They were rude.