FNB Connect *****ing voice bundles from subscribers!!

Hi, on the 20th May 2019 at about 16:50 I purchased 30 voice minutes/bundles via my FNB App to my cell number ********** 830 and it was successfully loaded. I then made few calls which totaled to 8 minutes and later I got a message saying I have depleted my voice bundles. I could not make any calls from there on my phone as my talk balance reflected 0 balance. At about 18:42 I then called the FNB Connect call centre to complain about this situation and I told they've escalated my query. I was then given this reference number Rt ********** 29648. Today (22/05/2019) at 10:29 I received a call from FNB connect, represented by Sicelo Mbatha informing me that he has been assigned to my case and he has noticed the problem from their side. He said it was a system error from their side omitting or clearing my remaining talk bundles. He has promised to load my remaining bundles (21 minutes) from the balance I previously purchased. Indeed he loaded them as promised. It's now 12:50 and I still can't make any calls from my cell phone even though it shows a balance of 21min talk time available to use. The reference number he gave me is: SCCR3CMXAF ********** 513 ********** 7. I can also confirm that the same thing happened earlier this year when I realized that my voice bundles disappeared without been used and FNB Connect acknowledged their mistake and again blamed their system. I'm very angry with FNB Connect and I regret taking out a cell phone contract with them. I also regret convincing my friends and family to take up a cellphone contract with FNB connect. My advice to all those who are having contracts with FNB Connect is to constantly check their balances on daily basis or else, FNB Connect will ***** them from you. Here is my proof!