Poor Service/Poor communication/ reluctance to refund charge that were their mistake.

Bought scatter cushions on 4 December 2021. The amount seemed high and when I checked the invoice I noticed a charge of R695 for freight, although I bought cushions in store (Shelly Beach). I phone and asked the sales lady to return my call still waiting1.Went in store next day, admitted mistake and promised to refund and advise once done. Followed up week later, promised to come back to me after two weeks, phoned Head office no Senior management available to discuss there cashflow problem to refund a R695 charge that should never have been charged.