******* that constanly ***** my airtime!

Good day Today I purchased a R50 cell c voucher from the Bay Terrace Garage in Durban central I recharged my account using the *147* method my account was recharged with R50. I then tried activating the R20 WhatsApp bundle which gave me an error code , so I re did it as no sms had come through saying that it was successful. I then tried purchasing a data bundle for r29 which told me it was unsuccessful due to insufficient funds so I did a balance enquire which says I have r10 remaining airtime. So I called the customer care line. I have spoken to a lady named Lamla Ref 190 ********** 7 0082 who says that two WhatsApp bundles have been activated on my account which I only have one sms saying it was successful. She the proceeded to put me on hold and magically another sms came through saying the WhatsApp bundle has been successfully activated. She then came back onto the phone and says her supervisor will investigate and get back to me. I then made it very clear to her since all calls are recorded that a sms was only sent to me for a second time when she put me on hold and I expect the r20 airtime to be refunded.I don't not put airtime on my phone because of the reason that cell c uses my airtime as data every single time that I do but as I do understand now as on the 01 March 2019 the new law states that my airtime cannot be used as data if I am out of a data bundle . I am still awaiting a response from cell C and expect my money to be refunded. I cannot understand how your system cannot identify that you already have a bundle activated and still take the money . How many other people are you'll doing this to and just robbing them!