Mis leading customers

Hi. I just had a terrible experience with the management n staff of Govin mani in gateway. I went in looking for a pair of pioneer 6x9 speakers for my car and upon looking at what they had their advertising indicated that the speaker is a 4 way pioneer speaker however the staff was not even aware of what the product was nor what the right prices was. So I advised I wanted to speak to the manager, who apparently was out of the store. So I left and came back. Upon my arrival the manager was there and I saw the advertising changed. So I asked the manager what is he going to do as I have pictures of the advert indicating the price and stating it was a 4 way speaker. He rudely said he had changed the advising and that he cannot do anything. I asked a 2nd time and he said he can't do anything and laughed n looked away. I was totally enraged. The product was advertised as 4 way speakers and now he quickly changed it and doesn't want to give me the product at the price advertised. Very poor experience. I'm sure there's others that have experienced the same.