BT 50 - GEARBOX, TURBO, INTERCOOLER !!!!

I bought a brand new BT 50 from Mazda Brits in June 2014. I noticed a noise in the gearbox. On the 15000km service they acknowledge that the gearbox is faulty. On 23000km the gearbox was replaced. The same noise occured on the 30000km service, gearbox was replaced. On 45000km service I raised the same issue and was informed that I do not know what I am talking about. Still having the same problem. I have been raising this same issue from 02 Dec 2014 to date still having the same problem. On Monday 27 July 2015 I heard a noise took the bakkie to the dealership they informed me that the intercooler and turbo need to be replaced. I am fed up with complaining and nothing are being done!!!! I give Mazda South Africa 3 options. 1. Replace the bakkie with a demo model / new bakkie 2. Buy the bakkie back from me and cancel my contract 3. Give me an extended warranty on the vehicle. I will never ever buy Mazda again this was my first Mazda purchase !! I am paying a lot of money on a vehicle which I need to return to the garage continously. If I do not get any feedback from Mazda SA I will approach the ombudsman and go to the press to express my experience with MAZDA SA.