Relax. Common fault. Go to your local indy. If you don't have one, go to AD.
If the pan's distorted, a new one is £133.73 + 14 screws @ £2.70 ea. and a gasket @ I can't remember + labour + VAT, of course.
If it's not, then the fix is just a new gasket, of course.
Replacement oil, if you/they want it, is £250 + you know what.