No callback

I called in regarding a casualty claim for my daughter, for children of her age we are covered for 2 casualty emergencies and the hospital account has been rejected. The hospital is a part of the casualty network, however because the hospital charges a fixed fee the claim has been rejected. I followed process, called the call centre and the consultant I spoke to said she would query it and call me back withing 3 - 5 days and I have had no feedback.

Please could someone more senior contact me regarding this, it makes no sense to have a provider on your network who bills in a way that your assessors are unable to process and pay.