[Kilra]

Unfortunately I have no experience with any of those methods.

https://ftid.io/boxing

Does this work with Zalando?

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My DNA worth about 700€ failed.

I was emailing and calling them daily for 2 weeks, threatening them and trying to escalate the case - nothing worked.

What possibilities do I have from here on?

Any FTID version or LIT that might work?
Unfortunately I have no experience with any of those methods.

What did they tell you, why was your claim denied? You can always chargeback

They repeatedly told me the 'our shipping partner has confirmed successful shipping'.

I can't perform a chargeback because I ordered via invoice wich you have to pay manually.

I could pay it and then cahrgeback, but I only have one bank account.