FNB Connect will not cancel flexi package immediately - 4 month delay because of roaming...

FNB Connect does not allow me to cancel my SIM immediately. I am on a Flexi month-to-month contract. They are forcing me to be on a downgraded package for 4 months because I activated/used International Roaming!

FNB's explanation: "...roaming usage can be delayed from 3 to 4 months depending on the service provider you chose to roam on. Within this delay, we cannot cancel the flexi package until the 4 months has elapsed."

I never agreed to these terms when I activated International Roaming and I can't find any warnings on their website where you can activate it. FNB you need to provide me with the fine print where this is explained on any contract I have signed with FNB. If I never agreed to these terms then it is clear that I have signed a contract somewhere that allows you to change the terms of our contract without notifying me.