If you cant get hold of contact details you will have some problems, keep trying, get in touch with the main/head office. I didnt work in Woolworths, if you still have problems, best thing is to get a quick temporary job, and gain a reference or explain in job interviews, and use the previous employer. Or get a voluntary job and after two weeks/however long use and ou get a paid working job, ask if you can use them. Good luck