RMA Case Created, No Follow-Ups

I'm attempting an RMA for my EAP670 v2. I uploaded the required details and submitted via the "Replacement" section of the support website. On the RMA "Replacement Details" page which shows the timeline, it states "TP-Link's technical support team will review this request and be in contact within 2-business days" but it has been 3 weeks with no response. How do I get help?