Bad service from Vodacom

I have for the last 6 months been trying to convert cell phone contracts to prepaid and have sent numerous email and letters of complaint to customer service and complaints. 6 months later my request remains unresolved. Please someone from Vodacom email me on ***. I recently read in the press that Vodacom have lost over 800 000 customers this year, I can understand why. Vodacom to need to train your staff to deal with queries properly.