Tl;dr Inventory not guaranteed, terrible customer service, much better alternatives out there.I purchasd "flex" seats for a recent production of Dear Evan Hansen. When purchasing flex seats you're agreeing to seats in a certain "zone" of the venue and then provided exact location at a later date (in this case 24 hours prior to the event). The zone I purchased was a luxury box level and the listing said seats will be in boxes A through Z. It also said they would be unobstructed "100% worry free".Being familiar with the venue, I knew seats in this area were hard to come by as they are club seats reserved for  "members" (usually corporations) and not made available to the public. So, I was very pleased to reserve 4 flex seats at a reasonable price that would put me somewhere on this exclusive box level. I should have known better.My order status was changed to  "Order Status: Processed: Your ticket seller has confirmed they have the tickets matching your request." shortly after my purchse. Then 48 hours before the event I sent a message to confirm that the tickets were still on track to be delivered the next day. What followed was the most deceitful and disappointing customer service experience in my life.Shortly after sending my email I received a call from a fast talking "Box Office Manager" that proceeded to tell me that the flex seat section I chose is not being utilized for this production due to special lighting from the show. Honestly, he was so confident that I almost bought it. But I did press him on his explanation since I knew closing down this section meant spurning wealthy club seat members and I had seen boxes available for other dates of this production on StubHub.When I mentioned the StubHub tickets he basically asked me to "prove it". So I told him what show to search and he indeed saw that there were tickets out there in these boxes (he just didn't have any). But rather than outright admit the tickets were bogus he continued to make excuses saying the boxes are obstructed view (blatant lie) and I wouldn't want them and how I should upgrade to these premium seats he had for just $120 more. Classic bait and switch.I refused to pay anything additional and continued to press him on how he could sell tickets he didn't have. That's when he tried to make me the bad guy. He said because I bought flex seats I wasn't guaranteed the tickets I purchased and that he has the right to cancel any order he wants. I pleaded with him to find me comparable seats as box office inventory was all but gone and I had already made plans to see the show. But all he could offer were lesser balcony seats.I pressed him one more time on how he can offer seats for sale that he doesn't have. He said that despite what the listing and the order status said purchasing flex seats is essentially a request for Mark's Tickets to find seats for you in that zone, and they don't actually have that confirmed inventory. When I began to express my disappointment he cut me off saying "I'm cancelling your order. Goodbye." and proceeded to hang up on me.In summary, they realized the bogus flex seats they had posted were actually in a premium seating area and priced way too low for them to fulfill the order and still make a profit, so they made up an excuse and tried to upsell me. When I caught on to their ploy I was hung up on.