the worst network provider in the.world....

I am a pay monthly or rather a post paid customer and just bought a recharge voucher. I used half of it to buy data was charged a rand for self service or should I say for buying data. Then to top it off they then ***** all my remaining airtime. Tried calling their useless call centre but like we all know they never answer calls.....not only are they the worst network provider but they ***** from their own customers. Wow what a pathetic company.....