Key links on dealing with coyotes:
https://www.mass.gov/doc/living-with-coyotes-fact-sheet/download
https://www.mass.gov/info-details/frequently-asked-questions-about-coyotes
https://www.mass.gov/info-details/prevent-conflicts-with-coyotes
If you want to reach someone official, the living with coyotes fact sheet says:
"IF YOU ARE EXPERIENCING PROBLEMS WITH COYOTES OR HAVE QUESTIONS, VISIT MASS.GOV/MASSWILDLIFE OR CONTACT YOUR NEAREST MASSWILDLIFE OFFICE:
Central Wildlife District, West Boylston: (508) 835-3607
Connecticut Valley Wildlife District, Belchertown: (413) 323-7632
Northeast Wildlife District, Ayer: (978) 772-2145
Southeast Wildlife District, Bourne: (508) 759-3406
Western Wildlife District, Dalton: (413) 684-1646
Field Headquarters, Westborough: (508) 389-6300 "