TT&T (private company) lease the copperline from TOT (state company). So i think when TOT have a connection problem TT&T will have most of the time too. I many cases the lines between mainoffice and user locations are too long (mechanic told me 4km is the maximum for real good speeds). Now TT&T wants to build more exchange points so customers will have a good and fast speed but the problem is TOT is the line owner and ask money for all this.
So many times it is a battle between 2 companies and we internet users only can wait the results of their negotiations.
Maybe you would say now to switch from TT&T to TOT for not having this problem but then you casn forget fast service too.
Many copper lines from TOT are old and TT&T changed already many parts of it. (ofcourse with payments)
The best sollution for fast internet (up to 4MBps) is through IPSTAR. Internet through satellite. Unfortunately it is at this moment still very expensive, 8000 bath by month, and you will need a special dish and receiver.
I sent many emails for TT&T since the connection problems started end august here and finally the manager informed me that they will make a new exchange point near my village end this year wich will give high speeds of 2-3 Mbps.