Dart motors poor salesman

Its unfortunate that i cannot go with absolutely no stars or i would give 5 stars for ********** sales. I have recently this year purchased a BMW from the aforementioned company. So its not my first "second hand" vehicle i have purchased. Sales man was very respectful but little did i know that i was going to be sold ******* or their problem. After purchasing a vw touran from them which had its problems but till today nothing major touch wood, was i thinking purchasing another car from them would be best. The BMW has been giving problem after problem as today the belt came off while driving. First it was the exhaust blowing and till today there is a problem with pulling from a standing position where the car just lose all power to move. Almost ended on more than i can count in accidents due to this. When i mailed them back in May i thought the mail would be read and had some feedback. Not a word up and till today but they send beautiful letters to thank me for payments. Dart motors clearly do not care and in it for a quick buck. Due to no response have i now seeked legal help which should be serving them soon. That young man that calls himself a salesman should not be in sales. He **** over and over. " Car had the entire engine redone" ( *******). " car needs to get warm for that poor pulling" *******. I am not going to fork out money when having to pay them every month.