I would like to address the matter from my POV, if I may,
First, of proving you asked for account deletion, as the explanation about it seems to be failed to be understood by you [no offense intended]. It is not possible. Your data wiped clean. Nothing left. As such, so did the correspondencies you had with them. That point is moot. Drop it.
[...]
First, regarding the account deletion, while you mentioned that it's impossible to prove a deletion request because all data is wiped, I still never requested for my account to be deleted, Earlier Duckdice representative mentioned, "when a user requests us to delete all data associated with his account," which implies that an account is deleted after such a request is made. Therefore, there must be an email or private message in Duckdice’s inbox showing my request, yet no such proof has been provided. If Duckdice claims they deleted my account, then I must have requested it from either an admin or a dev, and they should be able to provide evidence of that request. I continuously speak about the account deletion issue because all the proofs are there, and yet you guys are ignoring this part.[...]
I'll focus on this part, as other parts already being handled in a far more capable manner by others, and you seemed to still find difficulties to grasp this point, of what happened when you ask for your account to be deleted.
Imagine a piece of paper, or a book, if you may, titled "horsbyname". In it, DuckDice wrote all of your information. Your name, DoB, address, other KYC related things, your deposit and withdrawal history, your betting log, your bonuses, your chat, your complaints, your email, every single thing tha happened to a "horsbyname" during his stay in DuckDice.
At the end of that book, there is an entry, a line: "burn this book".
So, the book burned.
All of the content of the book, all of those betting records and personal info, all of those chats and emails, including the very one that wrote "burn this book" are thrown into fire and extinguished.
That is the "right to be forgotten" of GDPR.
There were not a single entry of "horsbyname" in DuckDice following that request of removal. Not one. Nothing. Nada.
So, it's impossible to ask for them to provide that email because it's paradoxical, illogical, and moot.
If they can procure that email as a proof, it'll need them to still have your data, since it's never erased. But it's erased, so they don't have it. Not anymore. So they can't provide it.
If they can provide it, it means the data was not erased and their statement that your data is no longer exist is false, thus, a lie, and logically they will not say this as it'll be a reputation-suicide. Thus, even if they have it as you never asked for removal, they will not provide it.
The other way to disprove that, is for you to provide that proof, which another paradox by itself.
It's either you can not provide a proof that you asked for account removal because you never asked, thus there is nothing to provide to disprove, or you can provide it as you did asked for it, but it'll be a reputation-suicide from your side. Thus, logically, you'll deny that such email or chat exist and will inquire them to provide them as a way to prove themselves.
Paradoxical. Illogical. Moot.
Drop it.
A way out of this endless loop is to think a logic out of those illogical things.
They want to disprove your statement that you're on 158 losing streak. It'll be a piece of cake if they have your betting history. What benefit do they get from saying that your data has been wiped clean? When the key of their rebuttal is in that data itself?
The fact that they can't make a rebuttal of you having 158 losing streak because they can't look at it on your betting history in their database, would indicate that the history itself is, indeed, no longer exist.
Why is it no longer exist? Because it's removed.
Why is it removed? Because of the right to be forgotten.
Where's the proof of it? Nothing. Not from their side. It's being forgotten. Burned.
It's a really simple situation that I am sure everybody reading this case can easily understand. I hope you can understand the situation that applied now too.