My ex husband, sister and father took me to court to get temporary guardianship of my son. The Guardianship was granted how do I get him back?

Family members claimed my child was endanger. Yet no charges of endangerment or neglect we're brought forth. None of the court documents are signed or notorized. Visitation stipulations are not made. My sister was awarded temporary guardianship, but since has handed child over to his father who had previously signed consent to the guardianship I did not I didn't sign anything. My family demands a hair follicle drug test, even after passing a UA. No drug test was ordered by a judge. My sister no longer has anything to do with the child. And the father is using child to control & changes stipulations on when I can or can't see him.They say I can only have supervised visitation n can't be left alone more than 3 hours with him but I can stay at my ex's house all day by myself with him but if I come to my house I can't . My family has prominent government ties in which law enforcement and representation will not help