Incorrect product received and terrible service from Makro!!

I just recently made a purchase on the Makro website and the service is terrible to say the least. On April 1, 2025, I purchased a breast pump, but the wrong product was delivered yesterday. Although the delivered product is cheaper, my wife needs it urgently. I spoke to a consultant, and we agreed to keep the product and requested a refund for the price difference. However, I am now being told that I need to first return the product, which takes 5 days, and then I'll receive my refund. After that, I'll have to repurchase the product, causing further delays. I'm extremely dissatisfied with Makro's service and would like assistance with a refund for the difference or at least have the difference credited on my account. I'm not willing to return and wait longer or pay almost double for the product that I received. This is a huge inconvenience!