I am a newbie here so please bear with me if this is a FAQ or common request.
About 10 days ago some ******** broke into our house, stole the keys of our car (Mercedes E-Class) and drove off with it. The car was recovered within hours totally undamaged (luckily the local authority towed it or it might even now be on its way to Africa - I never thought I would be grateful for rigid enforcement of parking restrictions

)
Although the car is find to drive Privilege, the insurers, insist that it is kept in their secure repair facility - not unreasonably since the guy who stole it still has the keys are knows where I live! However they are now sitting on the claim refusing to authorise the repair work.
Their policy says "If our approved repairers carry out the repairs, you do not need an estimate and work can start immediately" but I have contacted the repairer and they say this is not the case and they need approval before continuing.
I have contacted Privilege and they say this is standard practice, but each time I cross one hurdle they put another in my way (first they just needed a telephone interview, then they needed to inspect the car (which can't be carried out for at least another 4 days..., then they need the crime details from the police).
In the meantime my wife and four year old son, with my one year old in the pushchair, are forced to walk about 1.5 miles either way twice a day to nursery and back.
I have raised this with their complaints department but they have not yet responded and there is nothing the Insurance Ombudsman. Has anyone else had a similar experience with Privilege or any suggestions as to how to get the process moving faster?