Hi
Have you explained to your solicitor that you need 2 months wages before you will have your 10% deposit?
If not I think they will tell you that you have jumped the gun!. Normally deposits are paid at the point you exchange contracts, not at completion.
I think you should phone your solicitor on Monday and explain the situation. The buying process I expect will be delayed until you have the deposit available.
You could temporarily borrow the money from your parents if they were willing/able. The Mortgage company/estate agent just need confirmation from your solicitor or bank that the money is immediately available.
Huckster