Poor service with regards to a pre-operative admission approval

My husband had to be go for an operation on the 29th October and was instructed by the dr to be admitted on the 28th of October. I received the 1 day pre-operative motivation admission letter from the dr to send to Medshield for authorization as it was requested why my husband needs to be admitted on the 28th and not the 29th. The letter as well as the authorization document was e mailed on the 16th October to the preauth e mail address. After no feedback from anyone with regards to the e mail I contacted the pre-authorization department on the 26th October and spoke to Lebogang who asked me to e mail her the letter from the dr. so that it can be approved for his pre-operative admission on the 28th October. The e mail was send on the 26th ********** I phoned a little bit later to confirm if it was approved and there was confirmed on the phone that it is approved under the same authorization number as the operation number and I will receive a e mail confirmation which I never did. I believe you have recordings available of what was said to me on the phone as this morning I phoned Medshield to find out why accounts are not paid and was informed by the call centre agent that no authorization was approved for the 28th so it will not be paid. My request to sort out this problem with regards to this was e mailed again to Nisa with all the proof attached. I want a manager to contact me asap to solve this issue as we have dr's enquire about why accounts are not paid. I leave messages for Lebogang to contact me to solve this issue and this don't happen. Would appreciate if I can get assistance from a manager please as it seems that your staff is not competent enough to do so and rude.