Bad service from takealot.com

I recently order a new phone from takealot.com. I order a Samsung galaxy A25 5G 128GB dual Sim. I drove to pick it up and when I arrived at my house I released it was only a single Sim phone. I then called and told them about the mistake. They told me I had to return it and it would take sometime to fix the problem. I told them that this is unacceptable because I need my phone for work.

Today I received a email stating that the manufacturers do not have the correct phone I asked for so I will receive a refund, but the refund will take 3 to 5 business days.

I find this totally unacceptable, because I see this as false advertising and now I am phone less for a week. I am heavily reliant on my phone as a source of income, and more importantly I am now wasting a lot of time on this matter

Unfortunately I do not have spare money lying around to get a new phone. Your refund process is way to long considering that it isn't my fault.