Now that I finally received my refund it's safe for me to review this site. I needed to return an item but was unable to get a return authorization from Mobstub. The deadline for making a return was running out. Every time I requested an update I got a new ticket #, which meant the request began again and just complicated the process (to their advantage.)
I turned to my credit card company after being stonewalled by Mobstub. Within 12 hours I got a return authorization from Mobstub.
I kept a tracking number from the package, luckily. When I contacted the credit card company after a month to report that the issue was unresolved, the agent I spoke to kept me on the line while she got in touch with Mobstub. They said that the item had not been received, but luckily I had the tracking # from USPS which showed the delivery time so she was able to confirm that yes, the item was returned and yes, the purchase should be refunded.
Very bad experience. Never again.