Poor service!!!

I am so sick of Neotels poor service! Worst of all is that it had not always been like this. I have been a loyal Neotel client for over 2 years. First incident left me with a real bad taste in my mouth but I am now fed up. First incident was a 4Mbps line special they had. I had at the time a 2Mbps line on my name from them for over 2 years. My wife app**** for the special (which was only available to new clients) which was approved. They came to install but was worried that I was going to cancel the 2Mbps line which costs more than the 4Mbps line on the special. Their excuse eventually was that they cannot proceed with the installation as they cannot have 2 lines on the same address and they cannot get decent connection to the tower. Keep in mind I already had a well functioning line for over 2 years. I decided to leave it at that. Now a few months later I cannot even do a speedtest on my line as it is too slow to even establish connection. Phoned the call centre to report the slow line. They kept me on the line for 35 minutes having me do all sorts of tests and reboots. Just to confirm that I am correct and indeed I am getting slow connection. They sent a technitian who confirmed all is corrected and that my antennae was pointed to the incorrect tower. Their technitian obviously also set it up incorrectly before. After the technitian had been here on Friday I have still not been able to use my internet line for the weekend. Neotel I am fed up. Is this how you treat loyal clients who once upon a time advertised your internet to be the best on the market? It is appaling!!