The sales department harasses CSR

When I first started working at infofree...I got a call through the customer service line and a customer wanted to sign up for a membership. I signed him up. I was later yelled by a sales rep because apparently it was "her" customer. I didn't know this at all. I told sales that the customer came through the customer service line.

I told CSR management about this and that I shouldn't be yelled by sales but CS management didn't do anything.