Telkom bad service

Still my problem is not resolved. They send how many technicians but they can't find the problem, my line keep on disconnecting 5 to 6 times a day, they told me I must upgrade my line to a 4 meg line and also my account to a 4 meg, they told me to exchange my modem, what else do I have to do to fixed this problem, could someone send a professional to my house to fix this problem once and for all please.<br> <br> They also send me an account of R1800, R645 was for service what service?????