Can a Microsoft partner sell their license ? How can we raise a complaint in Microsoft for this.

Hi Experts,

As we were using Microsoft Dynamics AX license through a partner but the partner Sold their own license. The client is not even register in Microsoft.

All the sessions are running with the name of Partner. Partner is taking a big amount of money every month which is also seems huge as per market rate.

Is this model of licensing allowed from Microsoft ? How can we raise the same in front of Microsoft as the client is no where register?