Hi,
I hope you are referring to closure of CUG Mobile number issued to employee on behalf of the Company. There is no standard format for such letters. Like the way you posted this question in this forum you can write a simple letter to the service asking them to deactivate services to the said mobile number. Please refer the template below and edit as per your requirement.
Draft
Date
To,
The Customer Relation Manager,
________ (Name of Service Provider),
________ (Service provider’s address)
Dear Sir/Madam,
Subject: Deactivation of postpaid connection number________
Ref : (Company name )____________________CUG Connection
With further reference to the above we would like to inform you are we are no longer using the above mobile number issued to one of our employee subsequent to his resignation and relieving form our Company.
So we request you to kindly deactivate the above mobile number. We have paid all pending amounts and bills up to to date.
We request you to kindly do the needful at the earliest. For any queries, you may contact me at my alternate contact number.
Thanking you,
For ________ __ ( name of the Company)
___________ (Signature),
___________ (Name),
___________ (Contact number)