Your fridge and cooker should be on separate circuits, so a fault in one should not affect the other.
Make sure that there is only a single piece of fuse wire across the terminals of the fuse. (You worry me by saying you wrap it round). If you have put 2 wires across the terminals you have a 60amp fuse.It's OK to wrap it round and round one terminal, then a single link across and then round and round the other terminal BUT ONLY ONE WIRE ACROSS.
I think an electrician is the best person to call. A cooker man may only be a "component changer"; an electrician should have the know-how to isolate the problem.