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?
These ads were in every gaming magazine I read back in the day. EGM, GamePro, Nintendo Power, etc.
My friends and I never called any of them even once due to fear of parents+phonebill. We all understood that at a very young age, ha.
I even had one rich kid friend, he never called these lines even.