Poor service

I left the employ of AL3 Plaasmark in Dendron at the end of June 2018. I have on numerous occasions since then requested that my cellphone number be removed from their list. They do the security monitoring. The farm group, AL3 Boerdery from their side has also submitted requests, but it appears that National Security does nor have the will to do as requested. I am at wits end as to how to have them performa simple request!