I want refund - Consumer Complaint for PEP STORES

Hi I bought ladies shirt at pep store (Thulamahashe new Mall) in bushbuckridge only to find out they don’t allow people to fit in the store I went home and fit...it’s a small size (the cuts are too small)decided to return it yesterday for an exchange to try alternative size but ddnt fit as well asked for a refund they don’t want to refund me they telling me long stories..is that how you treat your customers?With all due respect I want my refund because I’m so pissed with ur customer service