Re: This is where you put the subject matter of the letter. You should also put here your subscription number or membership number so that it is easy for the reader to find your contract or personal details.
Paragraph 1: Here you need to introduce the letter and explain that you are giving written notice to request cancellation of whatever it is that you are cancelling. You should also write in this section that you wish to have confirmation of your cancellation in writing.
Paragraph 2: In this paragraph you should set out your reasons not only for cancellation, but why you feel that cancellation should be allowed. Here you should also indicate that you have finished making payments to them and you do not expect to be charged the subscription fee from next month on.
Paragraph 3: Thank them for their immediate attention in the matter and sign off.