Big O Tires Fraudulent Buy 2 get 2 Free Sale Torrance California

Big O advertised "buy 2 get 2 free" sale.  My wife went to get tires on her car first, then I got tires on mine.  When I received my invoice it had all kinds of charges for "services" that I didn't order.  I looked at my wife's invoice, and it was the same thing.  The largest unrequested charge was for a "service plan" for about $100 on my wife's car, and $120 on my car.  There were also a lot of other charges for things that we didn't ask for, like $32 for "nitrogen" fill, etc.  After I saw the charges, I went in to complain, and they said that the charges were part of the sale (that you had to buy the additional services in order to get the "2 free" tires).  When these additional "services" were included, the four tires cost about $50 more than I could have purchased them at the place I normally go.  TOTAL RIPOFF!!!