70YR OLD PENSIONER,NO FEEDBACK REGARDNG VALIDCLAIM

Hello, I have been battling for WEEKS to get a response. I have a valid claim against my vaccines but am being told all the ffg at different intervals: 1)the claim cannot be processed as it is over the counter (vaccines were approved then only the clicks nurse ordered It. On the day she administered it, it was rejected), 2)the claim was not received, asked to resend it. 3)the claim cannot be paid because I am on the coastal core plan?? I cannot understand all of this. It is very simple - I received an sms to go for the vaccine, emailed discovery for the nappi codes,called clicks,gave the nurse the codes which came from yourselves.The nurse ordered the vaccines then I went with my wife and take it,it is rejected after we took the vaccines and I had to pay for something I was told will be covered by med aid.I have proof of the sms.I am running around using my time & resources trying to get an answer from yourselves,I am a 70 year old pensioner and I do not appreciate this,the service is pathetic.I joined discovery in 2011 & it amazes me how no one can figured out why claim cannot be paid.Discovery told me viz sms to go for the vaccine.Await an urgent response,Ref ***,thanks