Kupat Hair's tactics are gezel gamur
This is not me talking (although I have certainly criticized their tactics, see for example, Another historic event from Kupat Hair Bnei Brak and Kupat Hair never stops ) but R' Matisyahu Solomon.
Kupat Ha’ir’s Over The Top Advertising
The Lakewood mashgiah Rav Mattisyahu Solomon, shlit”a, did term some of the solicitation techniques of Kupat Ha’ir as “gezel gamur”/ theft in the true sense of the term.
I wonder if this will make any difference.