Google never guarantees top placement in search results or AdWords. Beware of any company making these types of promises.
https://support.google.com/faqs/answer/2952493?hl=en#topplacement
I've received collection calls from Comcast in Pennsylvania before. They elevate late payments---you know, 12 hours late---to their offices in PA. I forget---is Comcast broke and going out of business or do they bleed money? That's right, they are owned by Universal Studios and NBC TV.