Refusal of returning a faulty product

I bought AIM oven stove on the 26th of June 2025 and today one of the plate is no longer working. When I bought the stove I was at Limpopo and I’ve since moved to Johannesburg, I’ve called and emailed customer service and asked them can I return the stove in any of the Pick n Pay in joburg and they told me there’s no problem as long as I have the receipt and original packaging. Today I tried returning the stove at Pick ‘n Pay Chrishani and they told me I have to go back to limpopo to do the exchange/refund which doesn’t make sense to me cause they also sell the same product. Can anyone who has proper information tell me what am I supposed to do cause it is really frustrating and I can’t loose my money just like that