Dissatisfied customer

Am really disappointed with the service I got today via the call centre, I bought airtime for the wrong number using my banking app and when I called the call centre they told me they can't reverse back to my number

Just imagine they confirmed to me that they can see the airtime on that wrong number it corresponds with the time I bought it with using my banking app...only thing to be done is take the airtime from that number and put it to my number both numbers are Cell C and this is simple request I also have my banking statement to back up my query and all I was told we cannot do it am really disappointed and upset, because I really thought am using the best network in SA here but today am proven wrong