I've done this. Used an AC repair company to replace my unit, all went well and left a good review on google. About a year later started getting bombarded with calls, texts and emails about the service and pushing promotions. I asked repeatedly to stop, but it would be a different number the next day.

Changed my already good review to avg with an update.

Calls kept coming, so a week later dropped it to a one star asking why the fuck they are calling/texting/emailing me repeatedly even after asking to be removed through the automated system, and speaking to a plreal person.

Guess where I won't go next time I need an ac unit.