ER24 Overpricing

On the 13/05/2019 i was taken by an ambulance from my house at night (Rabie Ridge) to Casternhof life Clinic ,inside an ambulance they only checked my BP and now i received an Invoice of R5 125.00 which is not detailed. i want a detailed invoice coz my medical aid rejected the invoice as i am not willing to pay such amount for transport only. I cant pay that amount for a 9 minute drive (4.6) km no ways