Return Product after Trial Period –
[Name, Company Name & Address here]
This is in reference to the products you sent to us for trial.
We would like to inform you that we have used these products and, after our evaluation, we have found that – [State the reasons you did not like the products, the essential factors lacking].
So, we are returning back your products, you should receive the shipment by [date].
We want our payment back we made to you for these goods.
Thanks for your attention.
[Your name & Designation]
Encl: [Enclosures List here]