Fedhealth is trying to rob me

You know I was only with Fedhealth for a little while. When I heard how they operate I just could not wait to find a new Medical aid ...and I did an year ago!!! Now they email me telling me telling me that I owe them money?... R252.49..(two hundred and fifty two rand and forty nine cents)..when I queried what it is for I am then told it is now R2520.49 (Two THOUSAND FIVE HUNDRED and twenty rand and forty nine cents) REALLY!!!! That is a big difference!!! Did you not think I would notice that??? When I asked you guys to assist me with a payment, recently. Didnt you tell me its a STALE CLAIM more the 120days old and thats why you cannot pay...well its the same thing here. I only hear about this amount...not sure which one because you guys are SO confused yourselves last week and you just expect me to pay it. I DO NOT HAVE THAT MONEY and I want to know in detail ...just like the invoice you sent me for R252.49... I want a detailed invoice....to see how you guys are ROBBING ME and for what..... oh wait ...you guys also mixed me up with another client...check my previous Hello Peter complaint about you...please get your facts right!!!!