Hello, Matteo!
Dear customer, the transfer was successfully carried out on our part using the provided banking details.
To identify the transfer between banks, you have been provided with an RRN transaction code. With this information, the recipient needs to contact their bank to search for the payment and clarify the status.
We would like to draw your attention to the fact that SEPA transfers between banks can take from a few minutes to 5 business banking days, according to the banking regulations. The terms may vary slightly depending on the regulations of the recipient's bank.
At the end of this period, the funds must be credited to the recipient's banking details or returned to the sender's banking details (in the event that the recipient's bank rejected or could not accept the transfer).
If a refund is received to our banking details, we will inform you about it by e-mail specified when creating the application. But at the moment, we have not received a refund. This means that the transfer may still be in progress between the banks, or the funds have been credited to the recipient's account.
Unfortunately, we cannot influence the banking regulations in any way, but we will make an additional request to the sender's bank regarding your transaction.

No need to write fancy sentences. Everything is clear and obvious. You are unable or unwilling to provide a receipt. Give me the receipt and the problem will be solved. This is not the first time in my life that I have had a SEPA transfer. I have had more SEPA transfers than I can remember. We are talking about one of the three largest web hosting companies in Europe. Is this company lying now? Also, they had already double-checked and said that the payment had not arrived.

Dear customer, please indicate at what point exactly did we indicate that your platform may mislead you? There was no such situation. We have indicated to you that we are not responsible for transfers that you make to third parties, and that it is necessary to clarify the information with the receiving party.
Can you provide the response you received about contacting the bank with this RRN and the absence of confirmation?
As we indicated to you earlier, we will take the necessary measures and contact the bank to re-clarify the transaction status. We should expect a response from the bank.
If you have any additional questions, please contact us in the most convenient way for you.

You had previously told me via live support that if there was a claim that the payment had not been received, then a receipt could be provided. But now you are reneging on that promise. Why don't you want to give a receipt? Or was the payment never actually sent, or do you simply not care about customer satisfaction?

Matteo, we provide a transaction number (RRN) to identify Sepa transfers, not a receipt. This information has been provided to you. The translation was done by us.
Like your platform, it makes no sense for us to lose our reputation over a single transaction. We hope for your understanding in this situation.
Please be patient until we receive a response from the bank, after which we will be able to provide more accurate and updated information.
We will send it to you by e-mail.
If you have any additional questions at the moment, please contact us.

I have provided you with the responses from the relevant company via live support. Please provide a receipt.

Dear customer, we see that the recipient did not provide information about the completed verification using the RRN code.

Please let me know from which bank the payment was sent.

What kind of nonsense is that? They tell me to “confirm payment” with a crappy receipt number without giving me any information. This is complete nonsense. Live support has stopped responding.

There is no need to make it difficult. Give me the receipt and that's the end of it.

Matteo, additional information and the transfer ID have been sent to your email. Thank you for contacting us! Please contact us in case of additional questions.