Discovery Medical aid, Inhuman treatment

Get pre authorisation for procedure, drive 400km to the hospital, check in, hospital realise the Mr and Mrs was swopped around. Their mistake, they pre authorised, then suddenly dont want to give me authorisation, tell me the initial authorisation was given in error and I need to reschedule the procedure. I explain I am 400km away, my docter is leaving the country and I took leave to get the op done, their response, sorry. The most inhumane company I ever dealt with, been a member since 2005. Over 2 hours on the line to resolve, but no luck. Just terrible, now I will pay the bill, why have medical aid. All because of their mistake.