OK online is refusing to pay me back my remaining funds

I bought a 4 plate stove worth R5999 19 March 2025 online at OK Furniture, they promise to deliver the stove to me within 3-8 weeks,it did not happen until I started emailing them with no response, called their online customer care and was transferred to Renee whom I communicated with, she told me to go and collect my stove it was delivered, hired transport went there and there was nothing,called her back and said I should go there by Wednesday hired transport again and the was nothing, until she sent an email telling me thaty stove was delivered at a wrong branch if I would like a refund or choose onother Stove becouse I trust OK Furniture I chose onother Stove worth R5599 and express my feelings that I was not happy, Renee immediately sent me an email to confirm my home address as written on my order they will deliver it at my home I confirmed it, after the stove was delivered she told me that there are no remaining funds left for me they used them to pay transport which I did not agree to it, she did not inform me, she used my funds without me knowing it.