Missing Item in purchase, not as described, missing components

So i purchased a Noctua Cooler from a member on RFD. Missing some hardware that made mounting not possible. He keeps saying to email noctua for the hardware. I dont think this is possible as a seconday buyer right?

Italic message is me, Regular is him. Bolded are key points.

He knew my intentions were to mount onto Intel. Item came with three of the four of the top holder. No back plate with post. There was a random thumb screw there with package. Also, no Y splitter and you can see I clearly asked about this many time.

Cooler came without backplate with post, Y splitter

RFD
ME still have the noctua cooler? Let me know thanks

Yes I still have the noctua heatsink
ME how close to markham are you??? also does it have the 115X intel mounting system?

Yes it comes with that bracket. It is this one: https://noctua.at/en/nh-u12p-se2

I am by Pacific Mall. I can drop it off on Tuesday if you want.
ME i can come to pmall tomorrow. what time? txt me,

so cooler, both fans with their splitter, all hardware for 115x mounting and am4.

Text

Hey is @#$% from redflagdeals. It comes with both fans and all mounting hardware. We can meet sometime in the afternoon, 12pm? Or whatever time works for you. It'll be $40 in cash or interac transfer.
ME Ya I'm at 16th woodbine. U?
I'm at work atm
I can meet you at the t&t plaza at woodbine and 16th
ME Excellent
Either today after 2 or tomorrow after noon
ME Ok I'll message again near 2. The dual splitter cable is there too?
I believe so, I'll have to check after I get home
ME
Monday · 3:05 PM
ME I'm at steel warden right now
do you want to meet at the T&T plaza?
by Steeles & Warden
by the Shoppers there
ME What time? I'm eating nearby
we can meet in a bit
3:30pm?
4pm?
ME Eating at TDCanadaTrust
do you want to meet there?
ME Yeah
ME okay and it does come with the splitter
i'll meet you there at 3:30
i'll text you when i get there
ME Ok am4 and 115x and both fan needed and splitter
yes - NOTE: Clearly it did not have the spliiter and the necessary components to mount to 115x.
ME Perfect
ME No rush
Okay I'm here
Pink Aventador
Monday · 5:35 PM
ME hey was there hardware missing?
Not that I know of


ME Missing 4th one. Came with random thumb screw. Also no back plate and posts
Mon 5:37 PM·MMS
You can email them with photo of the heatsink and your motherboard, they will mail you a new mounting kit free
ME So are u saying it is incomplete?
All the parts are there, I don't have any other parts
ME No y harness too lol
Would u what to say for the free mounting kit?
Monday · 8:22 PM
Just tell them what kit you need
With a photo of your motherboard and heatsink irl
Mon 8:23 PM