Stratum Benefits/Unity Health - WORST SERVICE EVER

So where do I even begin.. Stratum/Unity Health really have NO Idea what customer service is. Never in my life have I EVER had to follow up with a company so many times and still just get no response. The staff promise to call or email you back but never do. How does such a big reputable company operate like this? I was admitted into Mulbarton Casualty ward about 3 months ago. As per my plan I am covered in a private hospital in casualty. I was rushed to Mulbarton as I had gastro and I couldn't even walk/talk. I was unable to contact unity for authorisation however the hospital did on my behalf. They wouldn't take me in without getting authorisation. What I thought would be a smooth sailing experience has actually turned out to be the worst experience ever. The Hospital to date have still not been paid.. I am going to get handed over because Unity/Stratum are to damn lazy to do anything. I have numerous emails/ calls from the staff at Stratum to say that everything will be sorted and they will forward me the POP to show that the hospital has been paid. Well guess what, almost 3 months later and I am still waiting for the POP and the hospital has still not been paid. I have all of this in writing and I am ready to go and post this all over social media and take this further if need be. Every month they get my premium EFT without fail. They quick to take your money but when it comes to them paying out there is always an Issue. This is my 2nd issue in 2 months. If I can give anyone some advice, DO NOT sign up with them. Their service sucks to say the least and its just causes more stress in ones life.