Full Refund Complaint

I am dissatisfied with the service I received at Woolworth Festival Mall. I purchased four pairs of shoes during their 3 for 2 promotion but no longer wanted the fourth pair. When I attempted to return it, they refused to give me a full refund because the shoes were discounted, even though the discount should still apply to the three pairs I was keeping. I reported this issue to customer service, and three days later, I received a call asking me to return to the store for assistance. Unfortunately, I learned that the Festival Mall was going to be damaged that same night. I then went to Greenstone Mall with the same issue, but they were also unwilling to process my refund, claiming the special was over. Additionally, when I try to reach their customer care line, I’m just stuck in a loop without being connected to a consultant. I want my full refund.