Microsoft 365 features that help users manage their subscriptions, account settings, and billing information.
Hello Milos B,
Thank you for coming to the forum and I will be happy to assist in the best way I can.
I believe you have come to the wrong place for a solution, this is a user forum where users help other users with issues with Microsoft 365 software and accounts. The majority of the people here are Microsoft 365 users just like you and me. What you are trying to do is commercial and you will need to discuss it with someone from Microsoft Directly.
What I can tell you is you cannot use the trial anymore without a credit card. So if you want to work with Microsoft on this, you can contact a Microsoft Partner (that will require some Googling and leg work on your part).
I believe your company will have a Microsoft 365 business account so I can give you the link where you can call the Microsoft Support line for your country.
Select the region and call your country support line: https://support.microsoft.com/help/c0389ade-5640-e588-8b0e-28de8afeb3f2
I do hope they help you to get clarity and resolution to the pending challenge. If you need any other thing do not hesitate to let me know in a reply.
Kind Regards Fuad