Arrogant supervisor and negligence of agent

Monday morning went to the GP as was not filling well. The GP wrote refferal letter and call discovery specialist authorisation . The Agent who spoke to the doctor said to the doctor he need to fill in a form and send it back to discovery and discovery will take up to 2 day for outcome of they approve or not. I called today discovery following up on the authorisation number as I am in need of seeing my specialist to find out the Agent did not email the form on the 05/07/2021 was so furious and very upset coz I need to see my specialist and it is not the first time the discovery agents did this to me . I ask the guy I was speaking to to double check if the form was not sent the guys apologies and said no the is no form but I can send the form to the doctor now . I shouted and said I need to speak to the manager then he put me on hold then he said please hold the line I am still busy with manager explaining the situation. Here comes the manager with attitude razing a voice on me I ask him to not raise a voice on me he told me he is speaking I told him he must let me finish then he can talk. The manager don't want to acknowledge that his agent is at fault by not sending the form on the 05/072021 he is saying he want to call the GP and hear if it's emergency then he can take it from there . I told him I am not gonna wait for another 2 days he said I must stay on hold he will call the doctor and get back to the manager putted me on hold till I ask my sister to ask the GP if they still on the call with discovery all to find out they tolled the doctor they will send from for him to fill in and I was on hold almost 2hrs till I drop. Discovery is unprofessional and have ******** superiors and unskilled urgent. If I die today it will be on you discovery coz you playing with people's life coz you guys are not in the situation I am at now . I am trying to get help you guys a ****ing me up.