This notice is sent by the consumer to the seller, when the product bought by the customer is faulty or defective and that the seller must replace the product.
It is your right as a consumer to get a product that is of good quality and in working condition, when you have paid for the product. This legal notice is your means of exercising
that right. Also, if you wish to take any legal action against the manufacturer/retailer in future, this notice serves the purpose.
To make it legally binding, the notice must be sent by the customer to the seller through a lawyer. The notice must be duly signed by the lawyer on his/her letterhead.
You may use it if you are a customer who has been sold a faulty product, and you wish to get the product replaced or to receive refund.