PAY BACK THE MONEY

I'm very disappointed and not satisfied at all with my recent transaction, I buy R230 airtime every month and buy 1000 minutes, I did the same thing today only to find that I owed emergency airtime which to me didn't make since why would I get emergency airtime on the day I buy airtime for R230 and always convert it on the day to a 1000 minutes. Today I did the same and to my Suprise R23 was deducted so I am unable to by my normal 1000 minutes. Please sort it out and return my R23 so I am able to buy my normal minutes, your call center is also pathetic because they couldn't assist me. PLUS THEY GOT ME IN A BAD MOOD TODAY