I have no experience with them.
That said, how did you pay? If you used a credit-card you can likely initiate a charge-back. It may get SSBC to speed things up by mentioning you are going to pursue a charge-back.
I would typically expect 4-6 weeks for a moderate sized business to do a return/refund - but it's now going on two months. There is also usually a window for being able to charge-back on a credit card, and you may want to inquire with your card issuer to find out if you still have the option.