For foreigners calling the police

I work here, own a business, and am married to a Mexican. Sometimes the police respond to my calls, sometimes they don't. Yesterday the police drove by where the noise was coming from, and didn't even stop, so I don't think it was my "technique" in calling (I am always polite, and do speak Spanish very well). Instead it was whomever was in the police truck who chose not to respond. Maybe having a second complaint, when my husband called, did the trick. Or perhaps, maybe the guys in the second truck felt like doing their jobs a bit more.