Borderline ****!!! - Complete *******

I am completely disappointed in the service, or lack there of. I purchased a laptop and it was faulty so I sent it back. They received it and we made arrangements for me to get a different laptop. I confirmed which laptop I wanted and have since lost communication with them. I have tried contacting them through their WhatsApp to no avail. I tried calling their branch number and it says the number is unavailable. I called their customer support on several occasions and I'm still waiting to hear back from them. I haven't even hear back from them via email. It has been a month since I last had contact with the branch that I bought my laptop from and I am just about sick and tired of their nonsense. It feels like I have been ****MED out of my money!