Immerion Partners - Sponsor not paid after 1 year

Hi, about a year ago I was contacted by an Affiliate Manager of the InMerion brand regarding a sponsorship he wanted me to do to their brand. He makes me his proposal of 25,000 Eur in postpay, I did my work professionally, but once I finished my work, the manager disappeared several days, writing me only occasionally to send him my wallet to make the payment. He was obviously doing this on purpose to stall and not pay this money.

After a few days he writes me that he was sick and that's why he was not responding to me, but after this umpteenth LIE, he told me that he would only pay me 1250 EUR, but of course those never arrived either.

This discussion ended with affiliate manager < full name removed > starting to tell me that the real scammer was me, and not them who, however, the one thing they were supposed to do failed to do, which was to pay me.
Furthermore, he wrote to me, that in order to ruin my work with other brands, he was going to report me on an Affiliate Manager Telegram group as a “Scammer,” and he really did since he is ruining any collaboration for me.

I would like to get my money and be removed from that group, we affiliates have no security method to defend ourselves, they can do whatever they want.

I hope you guys can help me.

Best Regards,
Durky

Dear Immerion Partners,

Please let us know if there are any updates regarding this ongoing complaint. Please note that, in case you fail to respond within the given timeframe, we will consider your case unresolved and it will be closed accordingly.

Thanks in advance for your cooperation.