Sherman Dodge Chrysler Jeep Ram

I purchased two trucks from this dealership, in which one they lied to me over the phone what interest rate of which they found, and two the type of loan it was. It wasn't till I drove 2.5hrs up there to finish the deal and sign that paper work did I find out that the interest rate was .3% higher on one truck and .4% higher on the other truck. When I objected to it the finance officer was like oh sorry I must have been mistaken, it is only a couple tenths of a percent anyway. However, the thing was I had better offers from credit companies that I prefer using like Ford Credit. Second and most importantly, these were purchased for my business, with me being a personal guarantor. Meaning they don't show up on my credit score but I'm responsible if the business faults. I recently checked my credit score and both loans show up as if I was a co-borrower. I tried to resolve the issue with the dealership, and they will not return my call or if I do reach someone in finance department they tell me they will have to check into that and call me back, and they never do. The only positive thing I can say about this dealership is that I did get a great deal on the sticker price, but terrible experience besides that.