Upgrading: ADSL Line/No ADSL Service/Slow service

I've app**** to upgrade my business adsl from 4 Meg to 40 Meg in November 2015. After a lot of enquiries, the only answer I've got was that I'm to far from the exchange. My existing 4 Meg line done even test 2 Meg and after a lot of enquiries, the only answers I've got, were that the technician will pay attention. Until today, the problem still exist. <br> I have followed up daily the last week after I've request to upgrade it then to 20 Meg, with promises every day thay tech would contact or issue is being looked at. Reality is that one week later and I'm still battling to do my business.<br>