Just keep looking for a job and if possible ask your dad to help with 1 months repayments so it gives you an extra month to look around. And if you don't get anything still call the finance company and ask them to help.
At the end of the day, as long as you pay something they can't do anything. Then once your back in work, call them again and tell them and they will go through with you a repayment plan to get you back up to date.
Yeah as Martin says be honest and upfront with the finance company and they will be very accommodating to your situation. If you have family members who can help that will be a huge benefit too. Whatever you do don't borrow from another lender to pay this one it WILL cripple you.
Hope you manage to find another job quickly