Writing composition (Daily situation - formal way)

MercadoLibre Colombia.   April 24, 2020   To Whom It May Concern.   Re: Purchase ticket number 93586u346   I am writing to express my dissatisfaction with your shopping service. Because I made a purchase on April 01, But the product was sold out, then the seller canceled my purchase. I thought my money was going to be refunded when the purchase was canceled, but that never happened. I wrote to the seller on April 06 asking him about my situation, he told me that the company has a refund policy between 4 to 9 days. I waited the specified time. But the money was never refunded to my bank account.   To resolve the issue, I would like you to refund the full amount that I paid for the purchased product (400.000 COP) to my mercadopago account. I am enclosing a copy of the canceling ticket.   I look forward to the matter being resolved in due course. Please contact me at the email address email@email.com or by telephone at 000000000 within the next two weeks.   Sincerely,   Pepito Perez