if you don't have any idea what is wrong and why the person is claiming you have wronged them then you should straight away ask them what have you done that has made them upset and u have no idea
if they answer your question by saying u did so n so so they are upset then try to correct your mistake by apologizing
if they don't answer your qs then its a hint that u did nothing wrong and they are manipulating you by tricking u to think you have upset them, but that's not the case u did nothing they just want to have some fun...
thanks for ur advise. the problem is can't be too direct with them. so i get anxious.