Here is a model for the Membership Cancellation Letter:
Sender and address.
Date.
Recipient Name or/and Company Name,
and addresss.
Dear Name Surename,
I would like to cancel my membership
for Company Name with account number
(if you have it). I am canceling it
because ...(your reason).
If you use a free trial, you can add:
When I signed up for this service, it
was just to try the free trial and to
see if I liked the service.
And can add what you didn't like there.
If you've paid in advance for a bigger period than one month, add:
I would like to be refunded the full amount of my my membership dues.
And attach the payment proof if you have it.
End the letter like this:
I would appreciate you cancelling this membership effective immediately. If you have any questions, I can be reached at contact number/email.
Your signature over your printed name
(and title if it is necessary). Your
address and contact number/email.