poor service delivery

To whom it may concern<br> <br> I would like to bring to your attention the poor service delivery received from your company.<br> <br> My father's line has been out of order for almost a month now, and I've made numerous phone calls to your 10210 with no help at all.<br> <br> My *** effective the 15/06/2015, seven days later an escalation was incorrectly loaded by your staff, ref no 699372, with no joy from your company. Third escalation number 701843.<br> <br> I wonder what should my father do in order for him to get service from your company.<br>