account paid up but Jet don't want to close it and it is now accumulating charges.

I have paid up the jet club account before end of September 2020 and phoned the call centre to cancel the account and i was told to wait 24 hours. After 24 hours i phoned and get told there is network problem but they will put a note on my account so that they will close it when network/system is back. Today i phoned to check if the account is closed only to find out it was still live and the balance is now R70. how does the account grow when i have actually requested that it must be closed. The lady told me to pay the balance before she can assist with account closure. Please Jet and the new company sort out this mess, I don't needs account anymore and i worked hard to close this one. *** is the account that needs to be closed.