i know how you feel. i had a dog problem with a neighbor. he had a heeler and two rottwilers. they ran loose all over the neighborhood including my horse pasture. one of the kids down the road was bitten. the dogs chased the kids that got off the school bus at the end of the road. no one did anything.
i talked to the guy and was invited to leave his property. i talked to him again and told him i'd have to shoot the dogs if i caught them in my pasture. he threw me out again. i talked to his wife after i'd been chased into my house twice by his pack.
finally, i started calling animal control...for all the good that did...but after multiple written complaints and letters from the county, a hearing was scheduled. by then, they'd racked up 100's of dollars in unpaid fines because of my complaints. i drove an hour to the hearing. they didn't show up. another fine.
much longer story made short....i couldn't get anyone who'd had problems with the dogs to back me up. the county takes no further action. the dogs still ran loose. fortunately, he has the only property that can view mine. when i started carrying my gun out with me every day, the dogs got locked up.
temporary solution. he now has a pit bull that i had to return to him the other day. (yes, alive...this time)
at least it didn't cost my anything but gas and frustration. the county gave me the paperwork i needed.