Extremely Bad Service Problem not solved ( 3 mo

Cell phone No *** <br> Ref Number S3-8ZG2V-V4M9X<br> <br> Logged call on 4 Jan, again on on 15 Jan and again 4 Feb for number above.<br> Have 6 contract phones running my business<br> End December all the phones lost signal and lost calls intermittantly<br> After 2nd call on 4 Feb a technician came around and confirm me that I have almost no signal - He promised by same week Friday that the planners will be contacted to increase the signal direction up or down.<br> If that doesn't work they will install booster<br> I phoned twice already as I get no feedback nor any update and problem still unsolved ....<br> My signal was perfect with High Speed and voice and now I don't get voice calls<br> <br> Johan *** as my cell phone not working