Can you show some examples of some pages that you've worked with? They may not be bots, but how is the account activity on the likes that you'll provide? Facebook penalizes you for having low engagement with your fans; how is your engagement with some of the posts you've made from the past with some of your customers?
I cannot pronouncethe pages I work with because I dont have their permesion.I can guarante that facebook will not penalizes you. If it does I will return the money! And the first 50 likes are for free,so you can see that are real!