Engine Oil Leaking problems of the 2013 BMW X3

I was driving down the road and my vehicle went into limp mode. The malfunction trans light came on. I took it to the dealership for diagnostics and was told I had a oil leak and the air tube needed to be replaced as well as the programming update. The next day BMW service advisor, shawn wilcox called to tell me my timing chain need to be replaced and it would cost over 7000$. I don't know what to do. He gave me his advice or two options I had, I could pay for the cost of repairs and have a vehicle or just fix what was discussed and try to sell my vehicle to someone else. I asked him to help me and put me into another vehicle, he said OH no we can't do that. I asked why, it's your car you sold it to me. Shawn told me BMW knows what is wrong with the car you won't get anything for it, yet he wanted me to sell it to another family and endanger their lives. I wasn't going to hear from him again, very unprofessional. It made me sick. I called and spoke with customer relations a woman by the name of jessica and was told after 4 days of investigation, there's nothing they can do for me. I told them they could have the vehicle, I'm not paying for their manufacture defect. Something needs to be done. BMW is endangering lives by allowing consumers to purchase vehicles with known defects. I would have never purchased my 2013 BMW X3 28i in March 2017 if I had known I would have problems @ 80,000 miles. This is crazy.