Sold me a truck with supposed to be a clean no pro...

Sold me a truck with supposed to be a clean no problem carfax and no mechanical problems and 2nd day with the truck the driveshaft flies out from under it on Highway so I found one for 50$ and replaced 3rd day i had truck died on highway had every light in the gauge cluster came on opened hood and the main engine wiring harness was hanging off computer they had broken the all the connector clips had check engine light on and they said it was just the gas cap lied evaporated vacuum was messed up because somebody opened it and pinched the diaphragm and I got to looking harder whole engine wiring harness was not where it was supposed to be and was strung out everywhere and improperly ,they lied said it had no problems but clearly they threw a motor in it and the motor had a different year wrote on it in yellow ink marker like junkyards do the motor ended up throwing a rod in friends driveway and they said they'd get me a vehicle in 3 days 3 weeks went by and they ignored me and tried to make me pay for a motor when I've been walking to work for 3 weeks payed them 900 down and 3 payments of close to 200 a week tried to make me pay when I couldn't even use the vehicle told them i dont want to do buisness with rhem they said fine well cancel tax and evereything and now im trying to file my tax return and they charged me the tax so now I owe on my tax return when I'm needing it more than ever I'm going to sue these people