Router delivery - no communication

My mother and I picked supersonic to instal fibre. After Vumatel came and installed the line we tried to and e-mail Supersonic numerous times. I had no response to the e-mails, our phone calls were answered after holding for 15 minutes only to be put down by the person answering (we phoned 4 different times). I have even tried contacting them through their WhatsApp line but still no reply. It’s really ridiculous that a company that has to give an essential service during this time can’t even communicate when they will be delivering a router.