You are not alone
போஸ்ட் செய்யப்பட்டது ilya b அதில் துபாய் அமைப்பு
At least you have an option to switch to Etisalat. I also had similar issues with du when I moved in my apartment.
They were did not come to setup internet TWICE. First time it happened because of a 'system issue' and the second one because they just did something wrong.
The full story is on my blog called settling in