Shocking double charges

So, Vodacom - how ethical is it that you contact people to get them to upgrade their contracts and phones - and then continue to bill them for the old contract handsets as well as the new ones? This is never communicated by your service agents. So basically for the past 3 months I have been paying for 2 handsets (both of which were ****** anyway...)... I am flabbergasted at the ********* lack of disclosure and taking advantage of your customers like that. Fleecing your customers! Beyond fuming right now. (Adding insult to injury of having had both phones ****** 3 months ago anyway!)