Some days ago you ordered a yellow woolen sweater large size

Some days ago you ordered a yellow woolen sweater large size and light blue jeans medium size in an internet shop,when you got your order , you found out that there was a red woolen sweater medium size and light blue jeans large size. write a letter of complaint to the manager of the shop

say why you are writing
complain about the order
mention that you are extremely disappointed as you wanted to take those
things on holiday with you ask for replacement of the items or a full refund