Engine Exhaust System problems of the 2012 Land Rover Evoque

I took my car in to the Land Rover service dept where I purchased my vehicle because I smelled exhaust through the vents and I was getting headaches every time I drove. On my first visit they told me they could not find anything wrong. After a month of continued exhaust issues I took it to a different Land Rover service dept and they eventually found a hairline fracture in the turbo. They quoted me $6,500 for the repair and advised me that it was not covered by warranty. They told me to simply run my air/heater on manual versus automatic and drive with a window cracked. I am currently trying to find someone that will work on my Evoque that could possibly weld the fracture rather than replacing the entire system but having difficulty.