All post office posts need to have detailed description like How to reach there, Nearby land marks, facilities available, Phone Number, Full Address and it is better if you add more details.
More detailed posts will be awarded more points and wil be approved.
The business posts you have created have a very little description which is not acceptable. If people search for a post office that means they want to go there or they want some detail about that post office.
Please Note:- All Business posts only with detailed description will be approved.
For example, please see the below post.