Do not want to refund money

I bought a voucher which I can no longer use due to personal reasons and emailed Groupon 4 days after I made the purchase requesting cancellation. My voucher clearly says I have the right to cancel and on the other side, it says no refunds - ticketing deal. I have been calling Groupon to escalate the matter & their consultants will tell you not to bother escalating because you will not be refunded anything. Who the hell are they to tell me what to do? I am the customer and I have a right to decent service that I am clearly not going to get from them. Their consultants need training on how to deal with people because Albert just rubbed me up the wrong way. I'm sitting with a voucher that I cannot use, this voucher says I have the right to cancel and Groupon is telling me I won't be refunded my money. And each consultant has a different reason as to why you won't be refunded. Interesting??? I won't be using them anymore, I'm so done with them and am telling all my colleagues and friends to encourage them to shop elsewhere.