Cant get through their call centres

<p>This month Vodacom decided to not send me a montlhy invoice, and they debitted more that the agreed amount, now i cant get any help from their call centres i even tried the online chat and quess what i chat alone no one ever respond. when i call their call centre they tell me they are using the new system (3G) and they new to transfer me for assistance but no one answers they even promised me that they will get someone to call me and i am still waiting, This is a terrible service. Today i called again and requested to speak to a Supervisor and the consultant i spoke to kept me on hold for long and hung up the call. Is this the service they give to their client?</p>