DEVELOPING NON-PUBLIC APPS

Hi guys. I have a few problems regarding my apps approval. Currently I'm developing a few apps for specific company for a non public user. However, the apps keep getting rejected because it is not for public. The solution that have been suggested is, I use business manager account. However, the apps is still being rejected because for this solution, only the Apps that have the same ID as the company can be downloaded in the Apps Store. Thus, can you guys advice me how to get my apps approved through Apps Store.