reversals not done unable to cancell contract

I bought 3 gig data it went thru twice, It was requested to reverse one of R189 the data was reversed but I was debited??? Why.<br> I cannot cancel my contract because the ********** upgrade still reflects I want to cancel my contract and also not be charged for February 2015 due to the ***** I never used the account so I want my R189 refund and contract closed please this is a nightmare