Horrible Customer service

I purchased a wifi 12 days ago on the 4th of March 2025 they installed it on the 15th of 2025, after installation they left with no feedback from them regarding the password or activation whatsoever so since from them I haven't had good treatment from them.I don't want to talk about their salesman on my WhatsApp he ignores my texts, calls and their call centre puts you on hold forever till you drop the call. My relationship is ruined before it even started as am a new customer right now I have a wifi router that has no password to connect to idk what's happening it's on but no internet connection. For me personally I don't think they even deserve a star from me because the is nothing good I can say about this company. I need my password urgently since yesterday.