Harry Rowell

My grans 51 plate corrolla t spirt has deadlocked and we can not get into it with the key fob or physical key. She has just had a new battery so don't think its a flat battery. Anyone have any idea how to get in and what it maybe? The car was fine when she parked it up last night. She called green flag this morning the bloke scratched his head for a bit then said he couldn't help!