Terrible service(lack of) from Samsung

I took my Samsung A51 device for repairs to a Samsung service centre in bank city Jhb in August and I’m still waiting for assistance. I’ve been without a phone for a month without any idea of what is happening with my device. I’ve tried sending emails and calling but no one has assisted me. My emails have not even been responded to. The service centre just tells me that they are waiting for authorisation from head office. I’m beginning to feel like I am stalking annoying them because they never call to update me on the progress of my device or anything of that sort. I’m the one that is always calling and trying to find out what is going on; and even then, the phone call proves to be futile because no one assists me. I’m incredibly frustrated and have been incredibly inconvenienced by Samsung and would not recommend their devices to anyone. The way I see it, I probably won’t have my device back by December.