It really hurts when your friend who has not contacted you for very long time suddenly messages you just for help. It is sad but you really have to think over your importance in his or her heart; are you just a tool or real friend? It is never a new thing to me but I still have not learnt to turn a blind eye.
Will you be soft and grant the help?
What will happen if you ignore? Problems would eventually be solved and life goes on. The difference is just whether you would be taken for granted again in future or not.