What would you guys do in my situation?

So a few weeks ago, the brake lines blew on my Sentra, and it got towed to the local Marathon shop. No big deal, right? Except the guy working on it noticed that the clutch cable was attached to the transmission via zip ties, and decided to fabricate a little piece of metal to attach them more securely (Which he didn't charge for). After one week I get my car back, and the next day after that, his custom fix snaps in half. Another tow truck later and it's back in the same shop with the same guy working on it. He orders what he believes is the correct part from Nissan, again, no big deal. Two weeks later, (today) he informs me that he in fact ordered the wrong part, and he is now ordering a new clutch cable.

So here's the situation; I'm worried he has no fucking clue what he's doing, and that my car will be there for an indefinite amount of time. I have no idea if a new clutch cable will solve the problem; every time I ask him any details, he gives me the same bullshit runaround response, as if he doesn't understand that I bought my car to actually drive. So I guess I'm wondering whether I should spend the money on another tow to take it to a more reputable shop, or just stop worrying and get it over with.