Terrible Makro Online Service (South Africa)

I placed an order online for two clam pools and specifically ordered two green ones. They delivered to me a blue one and a red one and I have been trying ever since to call, email, whatsapp, anything asking for them please to send me two green ones and collect the incorrect ones for me. When I call no one answers, the person who returned my email just said I must return them to a store, I told her I ordered online because I do not want to go into a store due to covid and as this is there issue they should just send me a new one and take back the incorrect one. No one answers on the whatsapp line. This is for my little girls Birthday and all she wants is a green sandpit. Really upsetting that no one really cares at Makro. Plus, I have wasted so much valuable time trying to sort out the issue with no luck.