Payment to hospital for the 18th may 2015

Good day, <br> <br> My son was admitted for a day procedure at Christiaan Barnard on the 18th May 2015. The hospital submitted the bill but somehow you guys have just not received it. Towards the end of July I received an account from the hospital demanding the money from me and here I thought gems paid the account. I visited the walk in centre in Cape Town and was told they never received account. I then requested a detailed account from the hospital and submitted the account to your walk in centre on the 30th or 31st July. I even followed up twice with the call centre and they said they will process to the account. Today I get home and received another letter of demand. Can you please tell me when will this account be settled so that I can inform the hospital. Soon this account will be four months old then gems will tell me they won't settle the account. <br>