At least in Europe, there are many companies helping people with Google ads... Some are dishonest though (like "I'm from Google", "We have a free slot on Google

At least in Europe, there are many companies helping people with Google ads... Some are dishonest though (like "I'm from Google", "We have a free slot on Google's first page", "your ad will show on each and every search request", etc...). They're targetting professionals: I've come to know them when I was a photographer. And as far as I can tell, they're not very competent...