I had made a deal to buy a car. My credit was run ...

I had made a deal to buy a car. My credit was run and I submitted my deposit (not cashed though) and sales person refused to answer calls and emails after that And then emails me later car sold. (This the no responses )
My beef is why did they run my credit which will impact my score and take my credit card information. Will be complaining to consumer reports and bmw HQ