what type of visa are you here on spouse/workpermit ?
why are you phoning agenices ? why don't you phone the care homes, and also look for jobs at your local nhs hospitals. there are jobs you can do without needing to take uk exams.
http://www.jobs.nhs.uk/cgi-bin/advsearch
there are nearly 10,000 nhs jobs listed, you might find one you like and can apply for. just do a search in your local area..