I currently have a Vodacom topup contract at Nashua mobile that has come to an end. I would like to move to Vodacom directly, as their deals are better than what Nashua is currently offering. It seems nobody knows how the porting process works. Every time that I speak with someone, the story is different. If I move from Nashua to Vodaom and downgrade my topup package to a lower topup package, will I retain my accumulated airtime? At the moment, this is over R1000, so obviously, I don't want to forfeit it.