Groupon Double ordered my purchases and sent them to another address from a previous order, after emailing my order went through Internet

 I ordered 3 sets of headphones, but had no confirmation of it being accepted. Since my shopping cart still had the 3 sets, I tried again, and again no confirmation. Since no one was available to chat, I sent an email asking for confirmation of the 3 headphone being ordered. Several hours later, "Kumar" answered saying it did go through. That evening, I checked my computer and saw 6 headphones were to be sent to my daughter across the country. I was able to speak to customer service who said it was over 2 hours since the items were ordered and couldn't cancel the second order or change the shipping address, even though the items weren't mailed yet. She said the mailing address was taken from an old order and I should have checked it when I placed the order. I explained I never had a confirmation of my order, and couldn't contact anyone at the time except for the email I sent, which was right after I placed the order. Kumar never mentioned there were 2 orders, nor confirmed the mailing address.My credit card fraud alert called me about the transaction, and said they had other consumers with similar complaints about Groupon. My daughter has to mail the packages back to Groupon, then they will reimburse me " a few weeks later."