Awaiting feedback on logged query

I logged a query due to bad reception at my house on 03/02/2016. The reference number is S3-GM31E-ERO1L. From my last conversation the query would of been escalated back to the technicians on the feasibility to install a booster, I have received no feedback in over a week. This is directly impacting my ability to render a service to my clients after hours.<br> <br> I have tried phoning the call centre yesterday and today, after holding for 5+ minutes it just disconnects the call. <br> <br> <br> <br>