montecarlo — Jacket return

I have ordered a jacket through montecarlo.in on 22/01/23 and recieved it on 26/01/23 but after receiving the product i got to know that product was not up to the mark and there were major size issues to it. The amount is 3k+ and due to there 7 days policy i am requesting here to please give them notice of my complaint and resolve it as soon as possible. They don't reply to calls and mails which i have been doing since 3 days.