The way Mohammad treated us today was so rude

The way Mohammad treated us today was so rude. The car we wanted to purchase was a repairable ride off. We had lots of questions. We offered him a slightly different price to what he was asking. He scoffed and told us we where time wasters and to leave, i said he didnt need to speak to us that way and then told us we where weird. I .as shocked. This car needed some work still but was willing to negotiate. We where not combative and just left. Feeling totally disraspected. He lied and said the damage was just in one area but the mechanic that came with me showed me that he was not being truthful as evidence showed other areas under the bonnet..