2005 Volkswagen Jetta Question: How long should it take to replace my car if I have the P0011 number popping up?

I recently purchased this car (~6 months ago) and the day I drove it off the lot I had the check engine light on, at first it read P0011 and P0016, I took it back to be repaired (under warranty) they kept my car for roughly 5 days to fix the issue, I take it off the lot again and the same day the check engine light comes back on, I take it back in about a week later then they keep my car for about a week to fix my Camshaft Censor, and as I predicted the light came back on, now I kept it for about a few months because we were getting busy at work (I deliver Pizzas) about 4 weeks ago I take it back to now repair the P0011 (Camshaft) which they were supposed to fix the past months, and they kept my car for 3 weeks! As anticipated, I drive it off the lot and my light comes back on, now my car is at the shop, I brought it in last week Monday, here it is the next Monday and I still don't have my car... What is up here? I get no contact from the service manager and I don't think it should take this long to fix my car!