Working…not working

My car is needy. First, the problem with the heat/air (blows like mad but nothing comes out the vents) that we thought was fixed broke the other night. Don took out the air conditioner relay which means that now I have heat blowing out, but won’t have air. Hmm. It’s been to the local garage 3 times and a big garage in Buffalo once. And Chris worked on it too. It seems the problem doesn’t want to be fixed. But besides that we were hearing a thump, thump, thump when we rode down the highway. Chris was going to change the wheel bearing when he discovered it was the tires. Luckily the tires were still under warranty and Don got them replaced at Walmart this morning.