I also live in Akarca and when I used Turkcell for my internet I also found it crap, they came out to my house and the only respnse I had from them was that the lines are old so it loses connection, I cancelled my subscription and now have a turkcell dongle, it is much faster and more reliable, the only downside is that the 4gb I buy a month has now gone up to 39tl. 4gb is more than enough for the internet if you dont use it for watching tv though.