Sick of DCF workers

If a Grandparent tells a DCF worker that their child is putting their Grandchild in Danger and there is so much evidence. Why are DCF workers not doing their job? The problem is that DCF workers have to have evidence and so this is how they gather their evidence 1) they talk to the parent and other witness's 1) The parent is on drugs they are never going to tell the truth... they lie and steal for their habit!!! It doesn't take a degree to find the evidence that someone on drugs can't be a stable parent! The parent gets arrested for having every class of drug on them and this isn't proof enough? The parent and boyfriend is under investigation for bank robberies , not enough evidence? The parent has a warrant on them not enough evidence? Wow does she have to be taking the drug right in front of DCF worker before they believe it!