ER24 Double billing and perthitic client service

Even after writing a review a week ago, I have had no feedback from ER24. There client service is perthitic and putrit. The account Manager is always on leave or off sick. Namola is having the same issues with them whereby they double bill clients. They billed my medical aid and took from my savings and also billed Namola for the same thing. This is after I told the guy in the ambulance that Namola will be footing the bill and my medical aid must be charged. Its the second time its happening to me whereby there is a double billing. It happened to my in 2010 as well but was refunded without any queries. I don't understand how the account manager still has a job if he is always not available.