Applied for full-time Iceland job online which was...

Applied for full-time Iceland job online which was false advertisement and had phone interview I accepted role. Week later get a call saying zero hour contract which I didn't understand because applied for full-time role. How can I work on zero hour contract also how ment to pay bills and food shopping and never hour's to work. Iceland should I have two guards all times for extra safety o yeah one of guards I was training with rang control and double checking about my shift which he wasn't told o yeah they hanged up the phone DISGUSTING.