the problem as i mentioned is we can't see the "bend" in the tv. if you say you find it unwatchable, that may be, but, unless you watch tv from the side of it, then we can't see the "bend."
take pictures of it from the front as you would watch tv perhaps we can see the "defect" or "bend" in the frame. also, based on the way you have the level situated, it would not only mean the frame is bent from front to back, but the panel would also have to be bent which would mean, based on the bubble, it should be cracked.
also, is this a 6 series model tv we are talking about? i mean, this is the "TCL 65" 6-Series 4K HDR TV" thread. you make it sound like Target is saying they won't sell them anymore since you said it's not on their website anymore. only TCL tv's i see listed at target in my area are "S" series tv's and this is not that thread.
what model tv do you have?
TCL-65R615, 55P605 DV/HDR10 & 49S405 HDR10, Philips BDP7501, BPD7502 UHD Players
Oppo BDP-105D, 105, 93, Marantz AV7702MKII, NR1607. Xbox One S
Emotiva XPA5,UPA2, UPA200 & Mini X Amps
Speakers, Polk SDA-2, Monitor 10A & 5A, Axiom M80,
VP180, QS8, M2, QS4, ATMOS 7.1.4 & 5.1.2 NYGiants!