No refund from supplier

<br> On the 4th of December 2015 I sent my boyfriend to buy a watch from Matt Arend Timepieces.<br> When He brought it home I really wasn't happy with the appearance of the watch it looked nothing like the pictures on the internet. <br> The trap was not leather and it looked really flimsy and cheap. <br> He sent it back to the store on the 7th of December 2015 and they promised to refund the money on the 15th December 2015. <br> It is now the 18th and I've been sent from pillar to post, the store refuses to refund the money because they say only head office can do this,<br> This is becoming really frustrating.