We must remember who we are and not "lie" or misquote deliberately. If one would rather stay in error, it is his right but to carry others along is not acceptable. Let me start off your "tutorial" by answering them:

[1] "Touch not My anointed and do My prophets no harm" was directed at heathens, not the children of Israel (Christians)! YES or NO
[2] Israel was meant to test its Prophets to be certain they were of God and more importantly, were telling truth! YES or NO
[3] The NT requests us to TEST ALL SPIRITS. These would include the Spirits in Pastors as well as regular Christians! YES or NO
[4] Jesus Himself said many who come in His name are fake and to be watchful! YES or NO
[5] Jesus said ANYONE who calls himself the Christ is FAKE! YES or NO
[6] God's Word supercedes the word/thought/dreams/revelations/understanding of ANY man and infact, is what we must use to determine if they are of right spirit! YES or NO

I am not justifying the actions of the people who sold you the car but they are in the right. If you are not aware, every states has laws, regulations i.e. selling used cars "as is". Once you signed a contract you are bound and there is no guarantee to anything. I am sorry that it happened but what you needed is wisdom and discernment. The same as not taking every words that comes out of any pastors but it is our job to check everything he has said in the Bible. Unless you are fully anointed and has all the gifts of the Holy Spirit then you would have been able to hear the Holy Spirit speaking to you not to purchase the car. There is a lesson for you to learn here and first thing you must do is to pray for those people who sold you the car, forgive and bless them. This is the will of the Father. We cannot go around blaming the devil all the time when something happened to any of us out of ignorance. We are living in an evil world and why did you expect that everyone will be honest to you. I pray to the Father in Jesus' name that He would give you wisdom and discernment and you would talk, walk, act, and pray in the Spirit all the time. God bless you.