Extremely Poor Service

I am not happy with Vodacom and the service they have provided me. 1. They extended my contract without my consent. 2. They billed me and when I queried the billing they did not resolve my query and when I call them they blocked my number saying I called their call center multiple times. I need my money I don't owe you! The last consultant I spoke to asked that I send an email to for refund and that was the last time I could get through to Vodacom. Now they give a number that bills R2 a minute!