Exorbitant costs charged

I have been to Sunninghill in February this year. I was rushed there due to an anxiety attack. I was charged R6500 and was not even admitted overnight. I am receiving bills for xrays and blood test, etc so would like to know why on earth would they take an xray for an anxiety attack? Also what was the R6500 for? I am not on medical aid so you can understand this is huge costs for me. Please can someone at Sunninghill get back to me.