Single mother in desperate need for help

helli my name is Shena an I'm a single mother of two boys(5 & 2). I was laid off from my job on feb. 2013. This was hard to think about how I was going to take care of my kids & myself. Little did I know come may my vehicle started having problems. When I took it to the shop I was devastated to find out ihe going to cost me $600. My heart sunk! He here am I going to get this kind of money after being laid off and trying to keep up with bills & my family needs.  Praying day after day & applying to job after job I finally recieved a call I have been waiting for..I was asked to come in for an interview & it went great. Boy was I excited! About a week after my interview I got the best call I could ever get at a time like this. I got the job & was told I start October 1, 2013. This was amazing & all I could think about is things are beginning to look up for my family. Now as time gets closer I only get more sad because I've yet to be able to come up with the $600. To fix my car. I'm asking for any help at all. Without this help I will be unable to take this job to support my family due to non working transportation. Thank you for taking the time to read my story & god bless you all.