Maybe there are a lot, or who knows? In my opinion, only the team and its customer service representatives are aware as well as the users who are complaining about the issue.

However, not all customers will tell you the problem has been resolved when the team has resolved it. Many customers just continue their activities while thanking the party who solved the problem. But no problem, you can wait for someone to tell you that the problem has been resolved once a new customer support team is appointed.