Suspicious activity at Dr. Blanche Lavizzo Parkv e

I just moved to the neighborhood and am appalled at the behavior I see at this park. The recent quincenera practicing has been adorable but the vast majority of the people I see hanging out there head to the southeast picnic table to smoke drugs where they are even further out of site. I tried to call the non-emergency number this evening because I am fed up with feeling like I can’t use my neighborhood park but the unsavories left the park before I could get through. Should I continue to try to call the police or is there a more effective methodd to take back our park?