Sent wrong color stools twice & Customer Service site is broken – No way to contact Amazon.co.za

I am extremely frustrated with the service from Amazon South Africa. I ordered 2 counter kitchen bar stools, and twice Amazon has sent the completely wrong color. To make matters worse, I have tried numerous times to contact customer service through the website and requested a call-back, but the system repeatedly fails with the error message: "sorry something went wrong". There is currently no functional way for me to contact Amazon, and your team seems unable or unwilling to call me back to fix your delivery mistake. I need an executive customer support agent to contact me immediately to arrange the correct items or a full refund, as your automated help channels do not work. Thank you.