Agreement periods usually run up to five years, but initial retainer agreements are often reviewed and renewed annually—usually at the end of the financial year. Retainer hours are usually spent on recurring tasks that aren't major projects but are important to the client.
Retainer agreements (also referred to as representation agreements) are a type of compensation agreement with lawyers either for reserving their employment or as compensation for future services. Also inside the agreement are details on the scope and procedure for the representation.
This will help you understand your rights and options. Contact the factoring company. Talk to the factoring company directly and explain the situation. Ask them why the release hasn't been issued yet and when you can expect it. Be polite and professional, but be firm in your request. Get everything in writing.