Candy fridge freezer. hi got a candy fridge freezer fridge at top freezer at the bottom been

Question

hi got a candy fridge freezer fridge at top freezer at the bottom been turned on for 24 hours and the silver coils in freezer not frozzen well there is a one side the left side at top has iced up but rest of freezer wont get cold enough to freeze.any idea,s why and if i can sort the problem my self thank you david