Useless and poor service

i have logged an issue/fault with my router over 4 months ago and still have not heard anything from Supersonic. everytime i go into the Whatsapp chat, they take over an hour to reply to me but if i reply after 5 minutes of their chat then i am being forced to restart the conversation. the call centre always say that my issue has been escalated and i will receive a call from a technician but i never do. The only thing i get is the service tickets being closed without any resolution. i have resorted to placing a toothpick and sticky tape on the router so i can have internet connection but no one is bothered by this.