GMAIL Inserting Ads in Promotion Folder

[Holydoc]

Lately I have been receiving ads at the top level of my promotions folder. They look like normal emails but have the word "AD" in the right top corner.

Is there any way to disable these ads?

 

[Petrah]

I went into my Gmail settings on my PC and got rid of all those extra tabs/labels. So far I've not seen any ads... knock on wood.