Very poor service from Matrix Our trailer tracking units have been faulty for 4 weeks

Very poor service from Matrix Our trailer tracking units have been faulty for 4 weeks. We escalated the issue weeks ago, and someone was only sent out last Friday. The problem is still not fixed. Today we called the call centre again and were told nobody could assist us because everyone was in meetings for the entire day. We are still paying for a service that is not working. This is unacceptable. Matrix needs to urgently replace the faulty units and resolve this matter.