Lapscope instrument limit exceeded

I was admitted to hospital for a emergency gallbladder operation on 21Jan 2019. Been to the ER that previous Sunday. All the correct protocols were followed, Bestmed was informed and authority was received, making them fully aware of the type of operation that was to be performed. The operation was performed using an accepted laparoscopic procedure. Bestmed has rejected payment of over R4500.00 of my claim based on "Lapscope instrument limit exceeded" I am finding it hard to understand as we pay large amounts of money for this type of cover..