Waiting 3 months for landline installation

I app**** for a fixed landline in September. I used the online application method because of the nature of my job which doesn't allow me the time to go to a store and fill in applications. After requesting assistance via Twitter, I received an sms stating that my application was approved and I'd be contacted shortly. It's December and I'm still waiting. I chatted to an online agent today requesting assistance, but she couldn't pick up my application on the system so she wanted to start a new application. I agreed, but then she couldn't detect my address or street number on your system. Dead ends?! When I do a check for adsl on your website, it definitely picks up my address. <br> So needless to say I'm back at square one. Why's it taking so long to receive a telephone line?