National Security - worse service

I have cancelled my service with national security 3 months ago and they are still deducting money from my account. Their contact numbers states “this mailbox is full” without ever getting to speak to a person. Their 086 number sends a person around in circles again without ever getting to speak to a person. Their email has a generic response of “ thank you for your email” with no action ever executed on my instructions. Worse security company in South Africa