Im pretty sure returns have to be reviewed and tested before a credit is given back. That would take a staff member to receive, update rma, unpack, review and test. Likely two or more staff involved.
Few weeks or longer seems fine. Its the time of covid…. A custom order speaker through a retailer exchange would take much longer these days.
Tough time to be in their business, for a multitude of reasons.
The return on a pair of M3s is likely on a list of hundreds of things to do for someone on their end.
