Empty promises causing inconvenience in our life

We bought a car from Bell motors in September 2014 (Punto 2006 Model) when we went to fetch the car the dealer informed us that they were still waiting for the spare key from the previous owner, we didn't mind we waited (the above was also noted as outstanding on the contract we signed). After a long wait with no feedback we contacted the dealer to follow up on the keys, he told us the owner lost the keys so they will arrange for someone to make the spare key for us, that was end October. After that Ian never came back to us we then again phoned him to follow up again, gave us more stories on how they are unable to get hold of the guy whose doing the cutting and coding. Two weeks after that Ian came back to me, again after we had phoned him, and he said he managed to get hold of the guy and was going to arrange with him the following day to come and do the cutting and coding of the spare, that NEVER happened. While before all of that we gave them an option to make a transaction for the spare key as WE went out and found a place that could do the cutting and coding of spare key as this is causing so much inconvenience in our life. Till today (6mnths aft)we are still waiting on them