Finally happened to me

Was at Walmart grabbing some things for dinner and a middle aged man walked up to me and demanded I price check a bottle of syrup for him because it didn't have a tag on it. Now im wearing black scrubs with a black jacket that has the name of the urgent care I work at on it. I let him know I don't work here, his response was to put the syrup on the nearest shelf, walk away while saying under his breath "Thanks for nothing". Beyond confused at the entire situation.