Sales man *****

I bought a pre-owned vehicle from Hyundai Boksburg on the 21/10/2015. Getting this Vehicle was a quick thing for us we searched all over knew which one we wanted paid a deposit to go for a test drive and on the test drive we paid for the vehicle cash. This sales man didn't need to do very much to get his sale through, however there we many promises made. To start with i paid a deposit which i never received back. Then there were parts that were missing from my vehicle which were suppose to be replaced, not huge parts but never the less parts. I was promised when i bought the vehicle that the cracks in the windscreen would be filled which didn't happen. i was told by my sales guy that it had been filled but when going to PG auto glass they said it hadn't and now the crack has spread. Hyundai promises a 1000km gaurentee which within the first long drive i had to send the vehicle back, i told them the wheel alignment was out and my mother got told "its been tested she is lying" eventually they realised that the entire wheel was buckled and had to replace that but only after weeks of fighting. Every time we speak to this salesman he pretends that i **** about all his promises and just back tracks. He has told his manager and my mother that he never promised a thing. Sure i didn't get it in writing but if you sell an item you should sell it in full especially if you work for a huge company like Hyundai. To top it all off i paid for a service plan on the vehicle, take it in the other day to have a service and am told I have no service plan. Phone the company and they say i didnt sign something when i bought the service plan so it never went through, How can i be allowed to leave your offices without having signed something that is required for my service plan that i paid for to go through. They did sort that problem out however nothing else has been sorted. It is now months later with no contact from this guy or any of his superiors that i have spoken to how is it that this big a franchise can continue to function with such disgusting service if I was in head office i would be embarrassed to have one of my franchises ruining the name.