Appalling service and ********* behavior displayed by Vodacom

I have been trying to cancel a contract that expired already and have been phoning numerous times and been speaking to several consultants with no joy. I have escalated this matter to the internal complaints department twice now and after 2 weeks of fighting, following up, sending emails and empty promises, my contract is STILL not cancelled. My premium was also increased by more than DOUBLE the amount without my consent and no one can supply me with answers on this - this is ********* as it seems that changes were made to my contract & debit order without discussing it with me or getting my approval. I am at my wits end with the appalling service and lack of action from this provider. Once this matter is resolved, I will definitely be looking at taking all of our personal and company business away after being a loyal client of Vodacom for many years.