There was a stroller accessory pack labelled as £5.99, stating that it was reduced from £19.99. I thought it was a good deal so took one to the till, where the girl told me it was £19.99.
Someone came over to where they were advertised as being on sale, and I showed her the reduced sticker. She said the display must have been labelled incorrectly and probably a child had stuck it on ( while she looked the DCs)
I know none of them had stuck it on, they were with me the whole time! infact I doubt any child had, as the display was high up, and hard to reach for adults let alone a child. Plus what would be the chances of finding a label with correct full price and same reduced rate and sticking the label on so it was totally intact?!
She then pulled the label off ( it tore) and said it was full price. (fine). If it tore for her getting it off how does she think a child carefully peeled it off one product and stuck it on this one. 
AIBU to be a bit annoyed about how it was handled?? IMO they should have either given it to me at the price it was advertised as ( I know they don't have to but most places would as a good will gesture) or atleast apologised for incorrect labelling rather than making me feel like I had let the DC do this to get a cheap price.