Did you buy it brand new from a local store? The reason I asked is I would have brought it back to the store where I bought it and exchange it for another (after inspecting the new one) instead of the back/forth with T/C.
My venture is about 1 year old and it is my best shooting rifle. Nothing but praise for it and this thread is the first truly bad review of it (or T/C customer service) that I've seen. There are some mediocre reviews of the rifle but nothing this bad. I've yet to try T/C customer service, but it sounds like something is definitely amiss here.
Sorry you're not getting good service from them because this out of norm for T/C.