Taking my data!!!

On 2015/07/31 @ 10:20 I spoke to Kalakazi regarding my data that was loaded a few days ago and they are taking it saying my data is depleted.There are no T&C's stating how long this data is valid for.This has and is still happening where they just take my data that I paid for within a few days. MTN loaded (after that complaint) 29G on my phone for a month.I ask you what am I going to do with 29G.I needed my data that I bought at that specific time.I also asked Kalakazi to change my debit order to the end of the month.Still not done ,after I phoned 3 times requesting this..*** ,***. MTN is useless, I always have a struggle to get something done.I need to renew my contract with them now and I wont ,I'm going to move my number over to another service provider. I'm also going to hand them over to the Ombudsman as they *******ly take my money and if this wasn't the case they wouldn't have given me 29G when I reported this the first time.I have all the proof as well.