Charged for incorrect transaction

<p>I joined standard bank last yeat October I have never had such experience with other banks I joined it because I thought it was the best bank. Firstly their app is not blackberry compatible, last week I made a withdrawal at Pink n Pay Campus square whren I check my statement I saw that I my account was debited twice I call standard bank they say they will do a reversal but I must pay R24 which I don't understand since it was not my fault why a they charging me doesn't make sense to me!!! am not happy at all with this bank</p>