Credit back to my account for returns

I'm selling Avon and did a return a month ago and to date I haven't gotten my credit back, I'm being sent from pillar to post for the past 3weeks I've been calling and emailing them but haven't gotten any solution to my problem with my returns to the value of 318.72. I was told the person who submitted my returns didn't give them a picking slip and that person by name of nasreen is not communicating to me. I've sent the picking slip from my sales leader hopefully I'll get helped after this review cause I'm really tired calling them every two days while they have my items with them