Broad day light ******* at Game Liquor, Queenstown!!

On 20 December, I went to Game Liquor Store in Queenstown to purchase Tanquarey as I was informed that there was a special for R249 per bottle. When I arrived I was assisted by a gentleman and I told him I wanted 7 bottles of Tanquarey which were on the R249 special. The guy assisted me promptly and I also purchased some Hunters Extemes. He then proceeded to go talk to the teller and they have their chat and it was my turn to pay for the 7 bottles and the ciders. He then assisted me to load the bottles in the car and to express my gratitude I gave him R20. When I got home in Centane, i looked at the slip I realized that I was ****** and each bottle was R269 instead of the R249 special. I couldnt help but think that I was ****** broad day light by this guy and it is likely that the difference between R269 and R249 was kept between him and the teller?! This was ridiculous and nothing short of *****ing and utterly unacceptable! I want my money back and I do noy appreciate being treated in this manner as a paying customer!!! Pay back my money!