Hi everyone!
I need some help with my getting oil issues resolved with my 2010 Audi A4. I purchased the car in April 2015 with 83,000+ miles. Since then it has consumed oil like nobody's business. I have taken it to the Audi dealership and complained of the issue at least twice but was never informed of the issue with excessive oil consumption.
Last Monday I went out to start my car for work and a big cloud of smoke came out of the tailpipe, so I had it towed to the dealership. I was informed on Wednesday that the tensioner needed to be repaired and was given an estimate of $3100 and promised a rental car. According to the dealer the car had the first stage of repairs done back in 2013 at 58K miles, but no other records could be found for any follow up service.
On Saturday I went into the dealership because I still had not heard anything more about the rental car. As soon as I walk into the showroom the guy tells us he was just about to call us because the cam 'fell apart' when the technician began working on it again, which obviously is going to add to the already staggering cost of repairs.
Audi is not owning up to these flaws and has essentially told me that I'm out of luck and on the hook for the cost of all the repairs minus the diagnostic.
What recourse do I have and has anyone had a similar experience?

Thanks in advance!