Woolworths experience System Refunds issues

Woolworths East Rand Mall and their HO have failed dismally for 3 weeks to refund me R680, caused by a systems glitch on their side. Incident number ***. ERM management say they will "try their best"... HO made commitments to resolve a week ago.... Customer centricity is evidently not a priority. Is it not ***** when a licensed FSP holds valid refunds from a customer and holds that money for financial gain? Is there a Social Media house that can engage Woolworths to address my refund?