FNB Connect

I have been trying to delete a pre-paid SIM card ***) from my FNB account for some time. I have called in and been instructed to leave the account and wait three months. I have waited over a year. I called in again last week and was told it would be gone in 24 hours. It is still there. FNB Connect.... not great.

PLEASE NOTE: I do NOT want to cancel my Flexi Contract. I want to cancel the pre-paid SIM.