Cancellations/Upgrades/Customer Care= Terrible service!

Called in to cancel all of my contracts on the 1st March due to apparent cost changes to the plan I was on. Initially I was going to cancel until the rep mentioned that I qualify for up to 75% discount on all products because I have been with Vodacom over a decade. The consultant processed a cancellation a month in advance which resulted in me losing data, minutes and smses that I had just paid for. Everyday I called in I was promised a call back from a Supervisor....to date, still no call received.