Bad service and lack of assistance

I made a purchase online in error whereby i got a capitec bank push message to approve the payment and my mistake was to approve this push notification instead of declining it. I called the call centre immediately after making this error so it can be reversed but instead I did not get any assistance on the line in fact the line got cut off during my enquiry with Kabelo in the call centre. I ended up making a follow up call but still no assistance. I left a call back message as well but still nothing. I guess these are the "good services" capitec bank is known for and worse of all I can't get money back that I paid in error to an unknown person or company. Approximately R500 in the water because "it can't be reversed" I was told straight up.