Call Dropped on me

<p>I called today 03/02/2017 cause of something I don't understand that is happening when I recharge using my bank (FNB).</p> <p>I topped up with R15 twice and in both occasions the airtime disappears in seconds, all I wanted was an understanding on what is happening cause it has never happened before.. so far I've been happy with the network... until now. The agent I spoke to placed me on mute for 11 minutes with promise that he was checking something but dropped the call on me and I still don't know what's wrong my sim/number, how will I topup now not knowing whether or not the airtime will disappear again.</p> <p>I don't have any previous bad experience with the network or had any complaints but right now I'm just worried with the fact that my topup will just keep being taken.</p>