Hospital pre authorisation declined

I have a waiting period for a condition the ends, end of January.

I called discovery to find out if I cod claim and was mentioned if it has anything to do with the 2 Conditions on their system I can't.

Nevertheless, I submitted my pre authorisation knowing that my procedure that has nothing to do with my pre existing condition.

To my shock it has been declined. I want the voice recording of the the call Centre agent that I Contacted and advised me. I was told that it will not be covered if the codes are the same or the procedure are the same, which is not the same. I am going to get my doctor to write letter to explain the above.

If all else fails I am going to take this further.