13 Months to receive Statement BUT handed over

My son was admitted to Intercare Hazeldean for a tonsillectomy in June 2014, upon admission I took out the cash co payment to pay and the lady told me I do not need to pay, I double checked upon discharge that afternoon and again she told me I do not need to pay. what a HUGE shock I got in July 2015 when I was advised I am in arrears with this account. I got the statement emailed and I asked to find out why the reception lady did not take money (I have 2 witnesses to this). I have not had a reply so 2 days ago I had a missed call which I rep**** to come out at Schulenburg Attorneys,Needless to say I was apparently handed over the lady gave me an amount double the statement amount (statement dated 10/07/2015), before I could query this woman started screaming and shouting at me so I put the phone down and I have blocked all the numbers. I spoke to Norman again and he got a Cornelia to call me, I called her back and she refuses to provide me with any information to emails sent, proof of calls, proof of me receiving post during postal strikes, she refuses to give me her email address and just says deal with lawyers. I am now paying a recurring 10c a month to account as per statement