Lies from Toyota

I bought a new Totota Hilux from Rola Toyota Somerset West. The passenger head rest is ratteling. I tok it back to the them and was told i need to menton that when i service the vehicle. four services later they still say they will fix it. They then told me they will order the part and called me to come and fit it. When i arrived at the branch they told me it was a mistake, there is no part ordered. The service manager never got involved in resolving the matter and i am still waiting for feedabck almost 2 years later.