Claim paid but it was never paid

I wrote a report a week ago complaining that Fedhealth claims they paid the claim and it was never paid, a lady by the name of Isabel Sheerpers phoned me to explain what happened, which she. Claimed. They paid R300 and something to the doctor and it was due to system issues why the claim was paid, i didn't buy her story and decided to let it go, and she confirmed that on my next visit to the doctor i will pay the difference of what the doctor charged as i settled all my outstanding amount with the doctor, on the 16/06/2015 i received an email confirming that they are assesing the claim of the 07/04/2015,the very same one they said. they. Paid on the 04/06/2014,i aksed why since they said it has been paid, the response i got was that the claim was being investigated, why do they investigatr now when they said they paid the claim already?then i went. To the doctor today and when i asked about the claim that has been paid to them, they said there was no claim that was paid to them hence the claim was rejected in April, so i had to pay cash again, now i just want to know why this people keep telling me lies, who ever is going to call me now must have their facts straight!