Each of the directories we link to update at times that suit them. They are all different.
Some official directories, such as France, update almost daily. Many of the US directories are re-keyed from printed phone books, so can take years to add a listing (and even longer to delete an old listing, if they ever do).
Most of the directories are somewhere between these extremes, with an official White Pages the most likely to be fresh and a multi-country Yellow Pages or submission based business directory with few entries the least likely to be accurate. Some may be years out of date.
We have no way to submit changes and corrections. You will need to contact the directory yourself. They should have contact information somewhere on their site.