Pricing manipulation

I bought 3 tyres in store later I discovered that the was price manipulation when I order online is cheaper and I spoke to them and they keep on telling stories later I was given the contact number which suppose to be the regional manager when I called that number is ringing till to voice mail and the response later I wanted to buy the forth one but when I see the online pricing I felt I was ****med I wanted to return those 3 I bought so I can buy online all of them because there much cheaper till today I m still waiting for their regional to respond nothing is just ripping the customer off on pricing Bad service I will not suggest anyone to go there Regardi Natbi