Geico I took a drug test for them but failed which is false since I don't do drugs but my new job I start Monday I passed that drug test Macon Georgia

I called to get a second test done since in fact I wear hair weave and some of the weave may have been in my drug test sample and I know I have never failed or done drugs before I was denied then was told that it was my job to remember when I used drugs since it could have been 4 months ago and even still I don't do drugs I'm offended to say the least I have professional career titles with degrees I cannot risk that for drugs when I've never used drugs before someone please help me I really believe that I'm being scammed and or bamboozled because I've never done drugs