I have the same problem, it's really annoying as we have a shallow concrete ramp to our drive and it's starting to crumble from all the vans that come down our lane following their satnavs wrongly, and don't want to turn around in the muddy layby at the very bottom of our dead-end. It drives me mad, especially when their lights flash in our windows and we think we have visitors.
If I am in the front gardening when it happens, the hedge hides me from sight at first, so when they drive in, I race to their windows, tap on it and ask if they need help, are they lost... Those offenders tend not to repeat. However, I started over the course of time to remember the license numbers, and became aware that three of the offenders actually live in our lane, and all have their own drives - so why don't they use them to turn in? I don't understand what they are doing, apart from one of them who lives just diagonally from us. He has a lovely wide drive, but keeps the gate shut all the time during the day and parks outside so as not to have to keep opening his own gate - so he uses our drive to turn around if he needs to go out again during the day, not his. I let him off because he is very arthriticky and well into his 80s, but the other two, male and female, are far younger and I have to console myself with the thought that they are crap at reversing.