Been waiting 2 weeks for a refund from spar

I have been waiting for 2 weeks for my refund from spar. I ordered food online on Sunday, they delivered on Monday morning and I wasn't home. A lady at spar called me after the delivery was returned back to the store. I told her I wasn't home and I'd like a refund. She told me it would take 7 days for the refund to be processed. I waited 7 days and went back to the store to let them know I was still waiting for the refund. They told me that the problem is at headquarters they can't do anything about it. It will take 14 days. They said they'd call me once they have answers. It's been another week and I still haven't gotten my money back or a call from spar. I'm at my wits end now. Spar Flora park has disappointed me.