DSL light not glowing or blinking. there is no DSLlight

i have to come back to you with utter disappointment that my new dsl is still not working. my registered email is danishaer@gmail.com (for you to find my data). The technician did not come during the fixed meeting. I was told by email and facebook that my dsl is aktivated now. I again confirmed it on o2 live chat.  I was told that the connection is complete. I started the router, but the DSL led is not lighting up. there is no light in the DSL led. What i find very bad is that, i was not even shown for the first time that my connection is working.  i am a software engineer and my work is suffering because of no internet connection for past many weeks. i was told from facebook help to reset the router. i did that, but it still does not work.  please help me.