I think it would depend heavily on how reputable they are as a company. Generally, you need to check the work done before you ride off so that it can be fixed. If you go away, in their eyes you could do anything and they would not have knowledge of it. Hope this makes sense.
In short, if they are not reputable then they could say they did not do it like that and that is where your fight ends and neither of you can prove otherwise. Definately worth a go just be careful how you speak to them as you want them to be your friend in this case otherwise they could turn against you and that is the end.
