I recently purchased a 2003 Audi A4 from a local garage. After driving the car for just a few days I noticed a clicking noise in first gear - I think it’s a chipped transmission tooth, which could be very expensive to repair.

I called the garage I bought the car from and was told to drive it around for two weeks as the problem may go away. The garage also said they would take out a warranty on the vehicle in my name.

Two weeks have passed and the fault still exists. I have spoken to the garage but nothing is happening. Is the garage trying to drag this out so the 30 day standard warranty is void?
I understand this is going to be an expensive repair and feel the garage may be trying to duck its obligations.