ER24 AMBULANCE
Poor Service - by accounts department

I was attended to by an ambulance on 12/02/2012.
ER24 submitted the claim to my medical aid and the medical aid rejected it, as it was due for payment by the CDE.
I was never sent any invoice due for payment and I first heard about the outstanding account when I received an sms from Duvesco - Debt collection - June 2012.
I immediately phoned ER24 requesting the invoice, which I then sent to the CDE (Centre for Diabetes and Endocrinology). The invoice was paid on 17/07/2012 from the CDE to ER24.
The proof of payment was sent to the Debt collectors on two separate occasions. - As a result of ER24 not allocating the payment I have been handed over to ITC in Feb 2013 for an amount that was already paid on 17/07/2012.
When I phone today (2013/05/27) after being denied vehicle finance to to a report against my name by Duvesco - I was informed that ER24 has still not allocated the payment and I was also being charged Legal fees for the debt collection, for which I never received a single communication in all the time and in all my correspondence.
It is not acceptable that I am being charged collection fees, for an invoice that was paid with 21 days of it being e-mailed to be by ER24.