Spending $2500 on a billet input shaft for my zf gearbox, snapped it 2weeks out of warranty. Took the gearbox back to BTA Motorsport, he asked how much power I was running, I said 400rwkw. His reply "do u want to leave it with me?" I said yes of course. He took that as authority to do $5500 worth of upgrades to cope with 550rwkw then calling me to say it's done. Got the box it. Torque converter he supplied was dead. Emailed him in October 2014. He asked for ecu codes, I replied and waited a month for another reply... It never came.. Called 8times over the course of the next month to reach Ali at BTA before I blew up and demanded they fix my car under warranty. He booked it in for feb8 2015. I had to drive 450km to leave my car there. It took until Thursday to replace a torque converter. I called him before I left for picking the car up on Friday arv and asked for the car to be left out with the keys so I could pick it up after hours. He assured me the car would be out. I turned up another 450km later and the car was locked up with no keys. I had no choice but to drive home without my car. I left a calm message saying that I was at the shop waiting for my car after my mammoth drive. No reply the next working day. Additional to this I have been flat out lied to on 3 occasions and given 3seperate reasons as to why the billet input shaft snapped and how it was covered under warranty. Unbelievable customer service. Very pissed. Spent 8k in that workshop on my gearbox now. I also have recorded all conversations and documented all my info. Named and shamed. But unsure of where to go from here.?