GROUPON STAFFER HAVE NO IDEA WHAT THEY DOING

A few months ago I purchased 2 Groupon meals but never received the vouchers. I made them aware of this and they promised to investigate. I sent them everything they asked me to as proof of purchase but 3 months later, I receive an e-mail telling me they refunded me. What irks me is that this staffer Lushane thinks I am a fool and do not know what I purchased and what I did not. This morning I received another e-mail telling me I was refunded for a manicure I purchased. No proof of this refund nothing and insists this is what I purchased even after sending them proof of the actual 2 meal purchases a couple of times. Either Groupon employees do not know what they doing or I am being **********. I have a good relationship with Groupon, I just do not want this to ruin that.