Earlier quoted context omitted.
https://news.ycombinator.com/item?id=19124324 They (potentially inadvertently) hired a dev team that was previously banned for malware, so Google terminated the account and banned these new partners of the malware team. Did your partnership have the same problem? What is missing from Play (or the ecosystem) is a way to ask if the people you just hired are on their ban list, before you register your app with Google.
It seems like the full story is always less than reputable contractors. Set up fresh accounts yourself, people!
Also, banned by Google != less than reputable.