SBM Management Services interview questions

I was never offered an interview. I applied for the job, a day later someone contacted me via text messaging, asked me if i was still interested in the position, and then sent me a job offer to accept. After this I was requested to preform a background check and drug test. I have no idea if this was legitimate at all and am worried since they have my information from the background check, I did not go for the drug test.