Faceb00k auto-friend / auto un-request problems!

Hello all i am trying to make a script to auto follow 5 people then scroll down the page, and follow 5 more but no matter how long i make the sleep eventually i get the captcha image test. (Note: I added thousands before facebook caught on to my automation/ now they maybe flagged the accounts made from ip?? )

Testing the script on vpn right now to see if fb flagged accs on my ip and if my script will not throw captcha test!!!( EDIT: After 2 hours it throwed captcha test

Anybody will similar experience know the amount of attempted/sent request allowed per hour?

No recommendations or anything ......... i guess once facebook starts throwing the image captcha test on an acc it is blacklisted and now i can only add about 10 people before i get image test....... can't find any limits on fb developer that help me really, so i really need somebody's input who has experienced this and what the best approach is?