Applied for a job and was told it was temp to hire...

Applied for a job and was told it was temp to hire. Said it was no problem and went to Staff Finders to fill out paperwork and do a drug test. People seemed nice kind of. I did mt interview and was told I would get a call or an email about the job. This was on this previous Tuesday. I am supposed to start Monday and I have NO information on where I'm going or what I'm supposed to wear. Now they have my personal information and I'm very worried because the building itself seemed kinda fishy anyways.