Treating customers fairly

I called Multichoice to downgrade my current package and I was told I'm not allowed to do so until the next billing cycle which is in a months time.This is against the law,according to the National Credit Act they cannot force me to stay on a package which I don't want anymore and which I told them that I can no longer afford.The call centre Agent told me I must just pay for this package or my service will be terminated which is not on,I'm taking this up with the Ombudsmen.