Checksmart calls me 5-6 times a day from various numbers. I have never ever had business with this company. Here are their some of their other numbers (I will continue to add more when I know of them):
Go ahead and block or report these numbers. Get your service provider to screen unidentified calls. Then assign all these numbers to a single contact and block that contact. The do-not-call directory will not help you because it does not cover debt collectors.