(Customer Care Manager)
I would like to inform you that I have ordered a (name of product) from your (site) last week and I have received the parcel today itself and I am very much disappointed with the product. Instead of a (name of the product) I have got a (name of the product).
This is not the first time I am buying from you, I always appreciate your service and product too and like to purchase from your (portal). Though it was never happened to me and I am experiencing this type of inconvenience for the first time. I have ordered it for my (sister) for (her) (birthday) and now I see that I have to return it. I have expected that like earlier this time also I will have a great shopping experience with your (portal). Though it is very dissatisfying for me but I expect that it will be sorted soon. I hope that I will get your help and cooperation on this matter. I am expecting the exact product in exact color and size as well.
I will be very thankful to you if your (customer care department) will take care on this matter and will do the needful as early as possible so that I can get it in time and I hope that this will never happen again and I will get a good shopping experience with your (portal) in future.