Parkside Kia

Worked a deal out via text and was very clear about everything. This was to be a trade plus cash deal. I was very clear about the amount of cash I had and about my trade in (just an old Ford pickup- wholesale vehicle). I was also clear about the fact that I didn't want to waste their time or mine. I made the offer and was told that I may need to finance 1 or 2 thousand. I told him that wasn't going to happen. I had X amount of cash and my truck and was not going to finance. Was told by Salesman "OK let me see what they can do". A couple of minutes go by and then I get a message "Bring me your truck" followed by "Let's make a deal" - I understood that as the deal was done. Apparently, I should have understood that they wanted me to come so they could not only change the sale price of the vehicle but also they now want an additional $6500 Not sure how you do business like this.