Hi Angelap314 - You should contact someone else at that MSP. They don't know people are being treated this way if no one tells them. If the shops were rejected for being performed incorrectly, that's fine. It happens and yes, they would be rejected, but there is no need for unprofessional emails. Are you sure it was the Project Manager and not the scheduler. I've seen several schedulers personally upset when shops are rejected, especially that many, it means they aren't paid for the time it took to find you and schedule the shop for you. They now need to spend more time finding someone else, but also, it could cause them to miss the deadline for the client. In the hierarchy, the shopper is paid the most, the schedule is next in line, then the editors, who are paid less. Many schedulers are ICs, like you, and are paid by the completed job, not the time it took for find someone. They sometimes get sore when shops are not completed or are rejected. Some grow a callus and have no heart. NOT every scheduler is like that, but there are a bunch of seasoned ones.
The fact that this person behaved in an unprofessional manner needs to be addressed with that MSP. Regardless if the shop were rejected and how they felt, they should never treat a shopper in that manner.