The Foray Group interview questions

I got a call from a person stating ,he is from TCS. He were started his interview.i didn't get any invite email nor interview .scheduled.He has done basic round of technical interview by asking about my previous company and the projects.At the end he told I got selected and I will get a call.As he told I got a person from foray and spoke with me .She told I got selected.And she told to keep ready with the documents.like previous pay slips, relieving letter etc... And my bank statements. I am very much in confused state that I can trust it or not..Till now I didn't get any email for this . Everything was happened through telephone.