Sad service

<p>I recently purchased a powerbank online via GROUPON.... the delivery came and it was the wrong product. I made contact with GROUPON and they collected the incorrect unit from my house. 2 weeks later they claim that the deal is no longer and that I will be refunded. I think they knowingly sent me the wrong product thinking that I would not know the difference in the 2 powerbanks. I want my powerbank that I ordered not a refund.</p>