Wrong item sent

I ordered a \Dora the explorer\" duvet set off of Groupon.<br> <br> They sent me a bluetooth smart wristband!<br> <br> They sent me an email to apologise after i complained online.<br> <br> How can they aplogise for the inconvenience and then still inconvenience me further by still requesting me to repurchase the item after I am refunded!? <br> <br> They should sort the problem out and send me what i ordered and paid for!"