When you say centre section .. my suspicion is it's a UPVC door. I'm afraid nearly every UPVC door is made to order. Not unless you were to get a standard off the shelf door and then get someone to pack the frame out and fit trims to make up the gap left by a non standard door frame.
Having attended many burglaries I have found the lower panel in a door an easy option, to gain entry when forced out of the door with feet.
If the insurance are paying for it, 4 weeks is quite acceptable to have a door ordered, made ... and 3 hours to fit it.
In the mean time I would get someone to fit a sheet of plywood, glued and screwd in position. Done properly it will be stronger than the door itself.
Have done loads of them and with good glue, there is no getting it apart.
If it is a wooden door then it's a case of just fitting an 'off the shelf' door.