No ADSL service for a month now

I reported a problem regarding my ADSL line dropping intermittently on 11 March 2015, I've already escalated the issue three times since the problem was reported and until now the issue has still not been resolved. No internet for almost a month now, although statements are on time every month so I pay my bill every month.But no service, this is really frustrating as I also don't have appropriate 3G coverage in my area so ADSL is my only means of internet access at home. Why is this taking so long to resolve, if a service cannot be rendered properly, why sell it to customers in the first place. Very disappointing, according to the technician that was at my house today this is a underground cable problem. I don't really care where the problem is I just want it resolved, otherwise inform me that the ADSL service cannot be supp**** to me so I don't have to pay for not getting the service I expected in the first place. Why is it taking so long for this to be resolved?