My media company uses facebook because it is very easy to target those who would be interested in our product. We've found it is very difficult to keep our ads

My media company uses facebook because it is very easy to target those who would be interested in our product. We've found it is very difficult to keep our ads running. Despite being told that our ads are in compliance with their "20% text rule" they are regularly disabled. In addition, the initial traffic is always much better than after the ad has been running for several weeks. This makes facebook advertising very costly in terms of labor.