Zenni Optical Inexpensive Glasses on Internet

I was so excited to order from Zenni, love the styles and the prices. However, when I got my progressive lens glasses and my sunglasses, the prescription did not fit at all. I couldn't wear them more than a few seconds, they made me nauseous, see double, and everything was blurry - far off or close up. I called customer service and had to pay to return the glasses to see if they were made according to the prescription. They wrote back to say they were remaking the glasses, but sent me an invoice that showed they only intended to remake one of the two pairs. I got them back and if they made a change to them at all it was imperceptible to me. I was trying them on and turned to speak to a co-worker, I nearly fell because just turning my head made me that dizzy. No, I'm not exaggerating. I contacted customer service again and said that I didn't see the point in paying shipping to have the glasses made a 3rd time, and asked for a refund. They wrote back: As for your case, we advise you to confirm the prescription with your eye doctor and make sure the prescription you used is correct. Thank you for selecting Zenni Optical for your vision needs. I've been wearing glasses for 54 years and I've never had a doctor get the prescription wrong. I will take them to the doctor this week, but at this point I am tired of the poor customer service and just want my $100 back.