Aside from customer support you could also try
How do I determine what computer Adobe thinks I have activated PS on so I can activate on a new one?
the probability that Adobe just »thinks« up additional installations seems not very high – could someone else have had access your registration details and used them?
Or have you installed a new CPU recently?
You just need to call customer service.
As Noel said. Simply call support and they'll reset activation count. No need to make a song and dance of it. They do that hundreds of time every day.