DELIBERTE OVER CHARGING

My Tablet contract expired and Cellc decided not to inform me and offer me any contract upgrade, but decided to charge me R279.00 on a 2Gig Month to month contract without my concern. When I finally spoke to one of their agents accepted that I was being over charged and they will refund the overcgarge as soon as I upgrade. How does one upgrade when they don't have stock for more than 8 weeks? Early last week ( Tuesday) another of their agents ( KIA is her name) clalled me and could not collaborate what the first one promised, and promised to come back to me in 24 to 48 hours. More than a week later she's not come back to me.<br> Cellc, you are promissing to buy unsertisfied competitor's contracts for R 10 000-00, yet you keep on *****ing from your current customers.<br> Pathetic,