Price Cheat

I found a t-shirt marked at the normal price of R99 but when I got home and checked my slip I noticed I was charged R119.95 so I checked the price tag and there was a sticker placed over the R99 tag. I remember the teller scanning the shirt, she then walked off with it, I didn't think anything of it at the time but she obviously saw the price on the system and then very sneakily printed the sticker of R119.95 and didn't mention it to me. I'm such a good Edgars customer, I have spent thousands with them over the years, I even have an account there but this is blatant ***** and dishonesty. I have decided to pay my account off and close it and will encourage as many friends and family to do the same. As a loyal customer their disloyalty and dishonesty shown to me in return is shocking!