Bad bad service

So I bought a vw transporter from autoteam and the service was great to put pen to paper but the vehicle since day 1 gave me problems. I have been back and forth with emails and dealing with principle dealer and sales man but it's just frustrating. In the first 2 months of personally driving this vehicle the gearbox broke and I didnt even pay my first installment yet and this vehicle didnt even make money for my business. The gearbox cost 31k to repair they want to claim from my warranty I took out 14k and I must pay balance. What vehicle gearbox break in 2 months of receiving it. I have a fleet of vehicle and never came across this before and now its been standing with them for over 2 weeks and they just dont care anymore and this sucks.