People asking for help $$$

I keep having 'friends' (I put it like that because we aren't close.. Like just started talking) who keep asking me for money... I don't want to be mean and straight out say no I'm not going to give you a few hundred or thousands of dollars... My DH won't go for it either... We have been f'd over in the past by helping out people...We have our own bills to pay too and are TTC so why would we just give people money?? I don't know maybe we are being selfish but geeze... This isn't the first time this has been asked of us its not like we are rich and can afford to help everyone... How do I tell them nicely that no we cannot and will not give them money and to kind of hint to stop asking...??? Please and thank you for the advice.