ADSL & LAND LINE WORK INTERMITTENT

For almost 2 years now I am complaining about my ADSL/LAND line that is working .. and this important ... according to them INTERMITTENT but IT ONLY HAPPEN CERTAIN TIMES OF THE DAY AND CERTAIN TIME ON A SATURDAY. If there was a problem of intermittent services it will happen 24 hours a day not just during working hours (there working hours). It normally happens between 11 am and 4 pm during week days and between 9 am and 11.30 am on a Saturday. If you ask them if there is maintenance going on they tell you NO MAINTENANCE IN YOUR AREA or the technician who is attending to the problem tells you that there is a COMMUNICATION PROBLEM in Telkom they do not know if there is work going on in your area. HELLO ????? is there somebody out there who can tell me why is this INTERMITTENT PROBLEM only certain times of the day?<br> I AM PAYING TELKOM FOR A SERVICE AND A SERVICE PROVIDER AND I DO NOT HAVE A SERVICE THAT I CAN USE!!!<br> CAN SOMEBODY AT TELKOM TELL ME THE TRUTH ABOUT WHAT IS GOING ON BECAUSE I THINK SOMEBODY IS BUCKERING AROUND ON OUR LINES IN THIS AREA BECAUSE I AM NOT THE ONLY ONE EXPERIENCING THIS PROBLEM.