Ok I did that, I erased ALL of the services (including my own) and did the battery pull for almost 1 minute. The BB created all the services again on reboot.

The mail icon of the previous owner has completely disappeared but the configure mail icon hasn't showed yet.

I also went to Options -> Advanced Options -> Host Routing Tables and registered the device in the routing table in bold letters. I got a message saying that the device had been registered with the service provider but nothing. I went to blackberry's site and my carrier is not listed. I live in DR and the carrier is CLARO.