Spar security

Went to Spar Ferndale on the 26th to do a bit of shopping..Left a few minutes later only to realise tthat I had forgotten some of the stuff in the trolley outside I the ba*****t. I quickly went back to Spar when I got there they were closed already. .I went following day I asked the manager to check for me and she did..I had accidentally left the stuff downstairs in the ba*****t parking . My main concern is the security guard we were parked in front of her and since it was the 26th the parking wasn't busy out car was the only car downstairs when I asked her she said she ddnt see anything but When we came out of spar she was looking at us!she ddnt see where the trolley Went or who took it as it was busy.busy . I did tell no yesterday it wasn't busy at all because it was a holiday .Is it even safe for us to park there if the security guard doesn't remember anything. We were parked in front of her she saw us pack stuff into the car and leave but she ddnt see the trolley? ???It's a bit confusing for me..On my side I should have checked and made sure I packed everything