Granted, the "nickel and diming" of hotline numbers (1900, 0900, etc) was nowhere as bad as today's cash shops, but a lot of us simply forgot they were always hungry for all our money
Here's a bunch other hotline ads for you to peruse - https://www.retromags.com/gallery/category/1729-telephone-hotlines/
PS: I never understood these american numbers that used letters, how were you supposed to know what was the actual number?
Wait, some countries didn't have letters on their dialpads? Maybe this was just a thing in English speaking countries?
I never heard of anything like that in Europe. I always wondered about why americans dial letters.
I frankly don't remember whether the dialpads had letters in Brazil, possibly didn't; but I do remember that no number ever advertised like that mix, it was always the whole number