You may have done so already, but try calling the guy and ask if it's done yet. I had to take mine in and under same circumstances as yours, had to leave it and was told would be such and so time. So I called and asked them and told them no hurry but was just checking, I was told there was 1 or 2 ahead of me then would get to it. Well the next day they called and said it was done.
The guy told me he does that. He will take as can, but if someone happens to call about it he will start on that one. I don't know why, but it is worth a try.