Losing a shoe in public (guys only)

Went swimming once and i was the last person to leave the pool, staff told me they were closing. So i took a shower and went to the dressing room and allso here i was the last person. When i got dressed i noticed one of my shoes was replaced by someone else his.

The shoes looked quite similar but mine were Nikes and now one of them was not. I first searched the entire dressingroom, but i guess someone mistakenly put on my shoe in stead of his own, so i now had the same problem of having two different shoes.

The size was about the same so i put it on and went looking for someone from the staff. When i found someone i told her the problem. But in stead of helping me properly she made me leave the found shoe there! So now i didn't have two different shoes, i had only one shoe. I thanked her a lot and had to leave with just half a pair of shoes.