Yes, I can. But in any court case, you'd have to show your actual damages. Certain laws don't apply because they're not selling anything. That is the Federal "CAN SPAM" act doesn't apply because these are not solicitation calls, nor would a violation of the Do Not Call registry. It's not a NC issue because telephone communications are preempted by Federal law. Now it could be "harassment" if you could prove intent to harass, but that would be difficult to prove the intent needed. Furthermore, it makes a difference if they call you 5 times in one day or 5 times over the course of a week or a month. If it's a week or more, that's almost never seen to be harassment. But if it's 5 times in a day, that is more likely to be harassment.
Furthermore, even IF you could show damages, they would have defense of "mitigation of damages". If you only told them once to stop, the court would probably say that wasn't enough.
But the kicker is lack of damages. In a lawsuit against anyone, you have to show damages. That's a specific dollar amount that you have been harmed by their actions. That's why almost all of these telephonic harassment cases (such as CAN SPAM violations) are class action lawsuits. It's not "worth" it to bring a single case, because lawsuits cost more (~$1,000) than the damages awarded.
In short, I don't think that you would have a case at all, because there's no cause of action to sue, no damages that could be proven, no obvious intent to harass, etc... And you'd be asked why you didn't just block the number on your phone or through your carrier (which you can do...). Unless you had a good answer to tell the judge for that, I really don't think that your case would get anywhere.
I know this is probably not what you wanted to hear, but it is the law. I hope that clears things up anyway. If you have any other questions, please let me know. If not, and you have not yet, please rate my answer AND press the "submit" button, if applicable. Please note that I don't get any credit for the time and effort that I spent on this answer unless and until you rate it positively (good or better). Thank you, ***** ***** luck to you!