Unwanted advances, whether sexual, social, or commercial in nature, are all harassment. They all make the recipient uncomfortable, and others should be able to identify and respect anti-openness signaling like wearing earbuds or not sustaining eye contact.
I'll be sure to tell the Jehovah's Witnesses and floozies that they have selling solar that they're harassing me.
When everything is "harassment" nothing is.
Well, I absolutely 100% consider these types harrassing yes. The indicative parts is that they are 100% selfish in their reasons to contact (the jehovah's want to make themselves feel good by spreading their religion, the sellers want income). There's zero in it for me, there is zero consideration for me. I'm just a target for their gratification.
And they have no interest in my objections. I don't even open the door anymore to people I don't know because it's always bad news.
When someone tells you to stop and go away and you refuse, that is harassment.