Mistreated by a rude Senior staff man

I was treated badly by a man who seemed to be a Senior staff at the tills, because of inconsistency on their price tags for the same items and on marked down items not reflecting mark down price at the tills.

That man was arrogant and rude. He told me that customers tamper with price tags and never confirmed with correct price with their staff on the sale floor. He went on to say that customers do ***** and when I told him that there is plenty of of those dresses in the aisle where I took them and they all have marked down stickers. He said what a coincidence and ordered the cashiers to verify descriptions and prices on all other items that I bought saying that customers sometimes do *****. The cashiers confirmed that the other items that were already scanned their price tags were indeed corresponding to the actual items. I then left all the items that I was told someone tampered with *according to that rude man.

I find it strange that when their staff didn't do their work efficiently, customers are said to have tampered with price tags.