Fault closed without issue resolution

I logged a fault with my ADSL line on 7 March but was just informed it was closed on 15 March with no resolution of the issue. I work for an American company, worked from home last week and will be this week and usually works from home after hours also. This extremely poor service is starting to influence my work to such an extent that I had to get a 3G card to do my job. If this fault is not resolved and my internet functional by the end of this week, I would like to cancel my account with IMMEDIATE EFFECT, get a statement of my ADSL data usage for the past 12 months and dispute my account since I have not been able to use my internet optimally for at least the last 2-3 months. My new reference nr is 221CTK280316.