Complaint with Cell C service

I purchased R230 Cell C airtime and then dialed their *147# USSD to purchase Home Connector Flaxi bundle which is 100GB for R199. I received a pop up message that my transaction could not be processed because I have insufficient airtime, when I check my balance, I am left with R165 airtime and 40GB of data is loaded into my account. When I call customer care, the agent tells I had susbricribed to this reoccurring bundle on the 25th of May 2022. The date all this happedned is the 2nd of September 2022. I am asking the call centre agent together with the teamleader that why is this only happening today. I loaded airtime the previous months and no airtime has ever been deducted, why only today? Nobody can fix it or answer that question.