Metro fibre - Extremely bad service

I am the manager of an estate in Midrand.. Metro fibre technicians come in and use our camera lines, causing issues and when I try and get them out, they ignore all my emails. Their service is extremely bad and their attitude of we dont care is nothing to be desired.. Anyone even thinking of using Metro fibre, PLEASE dont. I have them in the complex I stay at as well on a personal level and Ive switched over to Open serve..