Vodacom - worst experience ever!!

Worst experience ever! I have been trying for over a year to upgrade my Vodacom plan but they have failed to do so 5 times now. The last agent promised me they would ensure that they would personally see to it that my new upgrade would go through successfully and had a free handset delivered to me as part of the my package. Two months later, my contract still hasn’t been activated and they continue to charge me out of contract rates, paying over R1700 per month when I am not even being charged a device as part of my package. When I tried to cancel my contract with then this week, they informed me that they needed to escalate to the back office and I couldn’t cancel because I had already received the free device which I haven’t touched. If anyone is looking to open a contract with Vodacom - I strongly recommend against it!