No internet connection for a month

it’s been a month now without internet and yet im being billed fully by supersonic On the 20th June the router went down showing an offline red light. ..i called (using my airtime) and had to wait,be transferred from department to department over an hour (happened every 2nd day while doing a follow) Told them the router is faulty and they send a sim card instead but still not connection Whatsapp line is not working even facebook messenger is useless Finally they agreed to replace my router but still no1 is calling nor any delivery to date Very POOR customer service