Bad Service

on the 21 of April 15 i bought an item on groupon .On the 24 i did the payment and emailed them the prove of payment .called to find out why the item was not delivered they told me my order has expired .called them on the 30 April told them i want my money back .called them again on the 12/05/2015 sent then an email again with my banking details and the prove of payment ,i still don't have my money .called on the 19/ 05/2015 they said the were escalating my query ill have my money within 7 working days .i have been dealing with this query from the 24/04/2015 till today its over a month now .I have now item and i don't have my money back .I am angry and frustrated with the poor services i received and the lies i was told by the groupon staff .i have sent so many email to them .today i called them again they made me hold on the line for 15 minutes .what groupon is doing is just wrong .and very bad customer services .I want my money back .