Get parcel counter and look after peoples good

Pick and pay liquor store must have a parcel counter ,today I went there with my parcels and as I entre there is no parcel counter we leave plastics inside trolleys or on the floor so I put mine in a trolley and went inside to buy , when iam done I came back the trolley is gone with my staff I asked the guy at the door all he said was it was someone's trolley and that person left and he went on with his life I was standing there not knowing what to do.i lost my parcel that was not looked after iam very disappointed