ER24 duplicate payment

I requested an ambulance through Namola in April. ER24 then billed Namola and took over R2000 from my medical aid as well. I have been liaising with Namola for several months and to date have had no satisfaction. My medical aid has been exhausted and now I need to pay cash for doctors fees. This is not the first time its happening with ER24. They are not responding to Namola and the account manager is forever on leave.