Date:

To,
Customer Service Manager
[Telecom Company Name]
[Company Address]

Subject: SIM Card Deactivation Request

Dear Sir/Madam,

I am writing to request the deactivation of my SIM card with the following details:

Name:
Mobile Number:
SIM Card Number:

Kindly process my request at the earliest. Please let me know if any further information or action is needed from my side.

Thank you for your assistance.

Yours sincerely,

Name:
Signature: