Unfair means of demanding payments

The medical aid did not pay the full amount for blood tests done while I was in hospital in February 2015.<br> I received no notification from Lancet, except for an sms on the 18th June indicating that there was an amount outstanding. No statement was emailed or posted. I received another SMS on the 2nd July indicating that if the payment was not made immediately I would be handed over.<br> The number indicated on the SMS rang, went to on hold voice, then was cut as the call was taken. This happened a few times.<br> After using another number I was able to get to the call centre. They indicated that they did not have my email address, and they sent me the statement after I gave them the address.<br> 1. The statement was not emailed or posted to me.<br> There was not final demand letter emails or posted.<br> <br> I asked for proof of an \email sent"on the 19 March 2015"