Hello and thank you for contacting JustAnswer, a third-party paid expert support site. My name is XXXXX XXXXX I'd be glad to assist you with your issue.
First, you need to tell your carrier that it has been stolen. They will put a block on the phone so it cannot be reactivated.
Secondly, change your Google password XXXXX away! You can do this from Gmail or any other Google service. Here is a direct link: https://www.google.com/settings/security
can i block the device using the IMEI ?
That is what your carrier will do. They will put a block on the IMEI/ESN so that if someone tries to activate it (even on another network), it will not work. The block is global and all carriers can see it.
the phone was purchased from the open market and not a carrier
it was sold by e.tel nig ltd.
Who did you have service through?
You should contact them to request the block
Ok, you will want to contact them to report the device stolen so they can put a block on it.
They should already have your IMEI number
am i to contact e.tel or MTN ?
MTN, they can put the block on for you. Looks like their number is XXXXX
thank you very much