Essential Med does not cover what they say!

I have been a member of the Essential Med policy scheme since 01/10/2013. I took the comprehensive cover, in order to be covered for most medical needs. In the time of having the scheme I used it for the first time in May this year. And then one other time, which was when I was in ER. My bill came up to R1100, of which they only refunded me for R292. And now I got a call from PathCare about my first doctors visit, they sent Essential Med the bill of R564 on the 6th May as well as 23rd of May, of which nobody at Essential Med has responded to. If they had not notified me my credit record could have been messed with because of this unpaid bill. I will have to cancel this policy soon as it is not beneficial to me at all, I end up paying my monthly installments and then my medical bills as well, what is the point?!!