Is it permissible to refuse to move from one university housing to another, and does paying the rent in advance constitute a contract that prevents that?

It is necessary to move to another accommodation if the housing regulations stipulate the right to do so and the registration form has been signed. This is in fulfillment of the condition, as the Prophet, peace and blessings be upon him, said: "Muslims are bound by their conditions." In this case, you are entitled to the difference between the two rents. However, if this was not agreed upon, students may not be transferred except by mutual consent, because a lease contract is a binding contract.