Business ProfileforCircle K

I visit circle k about 4 times a week. I have noticed they will have a sign up of a item being on sale and when it rings up its more than the displayed price. First time I noticed it was about 11 months ago I called corporate and left a message asking to be contacted i was sent to the wrong office by accident but that office called me back letting me know who to contact .so i called them and i never heard back from anyone in the 3 attempts made to contact them, because I had been purchasing a item that was being displayed as buy 2 get 5.99 each and was being charged 16 after taxes how I figured this out was I normally purchase same items so I didn't notice but the one-time I purchased just the buy 2 get them 5.99 and it rang up at 16.00 is when I noticed they had been charging me that price the whole time. But was being masked by my other items Just last Wednesday I went to purchase something and displayed 22.49 with taxes it came out to 26 Something so I put the item back and let cashier know signing needed changed or something she said all prices are set by corporate and they had no control and just Friday morning I went to purchase a item that was 2 for 6 each and it rung up to over 17.00 which is full price for each and I asked they put one back because that wasn't a deal the cashier said you always do this with our prices and I responded thats because your prices never match the tags on display I feel people are being took and mislead by circle k and for the head of the region to not even call me back to hear my concerns is very upsetting and in currently getting my receipts together cause this is noway fair