Hows your Life Becomes MISERABLE, what did you do in order to OVERCOME

I feel uncomfortable as of the moment.It was the third day when i have lost my two cellphones, money and some valuable things from my friends. I just do not know what to do. The story is... one man ask me if where i am working? and where's the place i worked, he continue to ask me, where i am studying? im just answering with their question and i just do not know, another two men arrived and speak with me, they introduce their self as one of the member of the fraternity, and they are looking for another member, they keep telling me that they undergo a test as requirements for their membership.That kind of a test is that you possess an attitude of being honest, so they show to me how being honest they are, one of their member accompanied me and they left us with a bag. and then the two proceed to a fastfood adjacent from our location and then after 3o minutes they returned. they told me that i will left my bag to them, and they instructed me to do what they have done, together with one of their member, we left and left my bag to them, we proceed to t a fast food which two members came from. the other member told me that within two minutes another member of their group will arrive, he told me that he will left and i will wait for other member. that time i do not know what they are doing to me. i waited for somedbody who didnt come. i returned to their place, and nobody is there. they left and i do not know where did it go, they carried my bag,inside that bag are my two cellphones, money, and valuable things which was given to me by friends. I feel frustrated why they have done this to me. I did nothing wrong, I am living in this world as simple one.... I have now my lesson which i cannot forget, a lessons that gives too much pain, although i lost those material things, it is only material, but valuable to me....