Hi rmania, and welcome to the forum!

Sounds like you have a real mess on your hands!! I'm sure we can help you get it cleaned up, but a few questions first:
1)What size pump, and what size/type filter do you have?
2)What is the ingredient in your "shock"?
3)What algaecide are you using?
4)What is your CYA and pH level, and how are you testing?

With some more info, we should be able to help you set up a plan to get it cleaned up.