Impossible to get authorization and thereafter claim under benefits

Was provided misleading and inequate information regards obtaining authorisation for specialist consultation. When GP called in they where also refused and I was not provided authorisation number. I went ahead with specialist consultation and after submitting claim I was told that I should have attained pre-authorization number. I complained and explained that due to discovery staffs advise and actions I was unable to attain authorisation. They response- we are so sorry and that's it. Take responsibility!!! Will be lodging complain with outside organisation as there is no point to take it up with discovery.