Flipkart — apple series 3 watch space grey 42mm od[protected]

Address:

Kanpur, Uttar Pradesh, 208012

I have ordered a apple watch series 3 space grey 42 mm order id (Od[protected] but instead of that you gave the same product but it was 38 mm one so once i received the product then i requested for refund as well as replacement also but your guys told that replacement is not available then i requested for refund but you rejected the refund without stating any reason after that i have contacted you several times but there is no response and you have rejected my refund three times. Is it my fault that your seller has delivered different product and you guys think customers are fool they have to keep the product whatever it is.
I dont know any seller i ordered it through flipkart, so you guys are responsible for this kind of fraud, this is the final mail i am writing to you as already 28 days passed and you guys have done nothing that is the kind of customer service you provide to your customer.

So i need a quick response and if you are not able to do so kindly provide me your registered office address so that i can send you the legal notice as you are leaving that option only.
Hoping for positive response.