It happened me a few years ago. I live in the Netherlands, but I am Hungarian. My new "friends" asked me to fix their laptop. I did it for free. It turns out, it was a huge mistake. In the next half a year I've solved several issues to them and to their family members (I don't get it, how they can ruin a well working hardware and software that fast, but it is another story). It takes a lot from my free time at the end. Then I had enough and ask some money to fix the next laptop. The price wasn't high, a bit more than a half of the repair shop's price. They tried to press me to do it for free, cos "you are our friend and you are hungarian too, we have to help each other out". I said no. It is too much. I've never seen them again...