My experience with myknobs.com was initially great...

My experience with myknobs.com was initially great. I ordered sample handles to determine the color we wanted to buy. Received the samples within a week. After choosing the color, we received an RMA number for returning three of the handles. It is now three weeks since the handles were signed for, and we have not as yet received a credit. I have contacted them by phone and email, without success. BTW, prior to this problem, we placed an order for 28 additional handles, which also arrived promptly.