Myntra.com — Roadster tshirt

So i ordered a roadster tshirt. and the day i got my order ...the tshirt i got was light coloured than compared to the image..so i immediately returned it..the delivery agent refused to take the tshirt as it doesn't match with the image as it was light coloured..so i talked with the customer care ..they told me everytime..we will help you..and asked the bar code and the details related to that tshirt..and at last they send me a message that they had given the correct product so your request is cancelled..now what should i do..i want my refund..