Vodacom Taking Money and not delivering service

I took out a vodacom contract @ R 469 /month in March for a blackberry passport. The device uses a nano-sim like most modern smartphones but on delivery a micro-sim was delivered. I queried the sim-card by requesting they deliver a nano-sim but low and behold they delivered a micro-sim again. I went to the nearest vodacom store to attempt to resolve it and I was informed they could not pick up the sim via its icc number, called vodacom and they said the same thing. I have made numerous attempts throughout this period racked up a cellphone bill in that period to reach vodacom to resolve this issue but no luck because the sim is not active and there is no cell number attached to it and the iccc number is unknown like a ghost sim card. Now three months down the line I have the wrong size sim, sim not active on the network, no vodacom number and vodacom themselves do not know or cannot pick up the sim icc on their own network yet I am being billed for the service. This is breach of contract!!!