Poor service

Good day I am struggling to be admitted in hospital No email was send to me that I must upgrade before 31/12/25

They do not want to cover my admission or procedure and say I can only upgrade in April and then they can assist me. I am not satisfied as I need care now and if I was informed by discovery about my option to upgrade I would of done it.They also refuse to back date it. What is a 5 day difference? I always thought that they care about their patients. I am going to take this matter further as far as I can even if it means I have to take them to court! Can you assist please? Quite urgent Or are you more satisfied leaving me in pain and let me suffer? But do not forget that my monthly payments is acceptable!but I must deal with poor service.I am planning to cancel and join a better scheme