Discovery,authorisation and mixed up

My husband needs to go for a scope,been a whole year of trying and just got messed around with discovery. We called again yesterday and they gave us 2 doctors to choose from saying after we choose we should call back and they will change the dr name and authorisation number,after choosing one of the doctors,they now say I have to go back to square one and get my gp to send documents which will take another week or 2.. my husband is suffering in pain!