Faulty and damaged bike being sold and no response from the owner afterwards

Very bad experience buying a bike here . Had the bike for 1 week and it started smoking very bad after few km , after inspection of a qualified mechanic we found that the bike is in horrific state engine wise as plans has been made to get the bike to run such as coldrink tin cans that was used to make shims for the bike as well as a lot of damages that i was not informed about after asking 3 times if there is any damages or errors i should be informed off before purchasing the bike and i was told the bike runs like a dream. After speaking to the owner he promised to get back to me about the serious matter and guess what still no answer after a few months . Really very bad client service do not even bother buying a bike at the shop or for repairs as i would not trust this ***** repair and sales shop!