adsl and bad telephone line

I've reported a fault on my adsl and telephone line 3 weeks ago, they took thier time to fix it after fixing it problem came bk again, i reported again, since then a technicia came and said the prblm will be fixed. Whole of last week i kept on phoning, they keep on saying a technician will come i even took leave from work last week nobody came. I called yesterday as well still and today is almost over no one called or came. My internet keeps on dropping and telephone has a noise in the back ground. My escaleted ref number 827986.