Slack service

My landline and adsl internet went down on 2 December 2017. Since I couldnt use my landline to log a fault, I logged it in the app. I received a reference nr via sms shortly after. I heard nothing further. I phoned them again on the following monday, wednesday, and twice on the friday. The first two times I was told theyre "testing", the third time that it has been allocated to a tech (from whom I have still not heard) and the fourth time that it would be "escalated". It is now a week and a day since I logged the fault, and my service is still down, with no indication of how long it will take to restore, or why it is down. I am very unhappy with this level of service, as their attitude seems to be one of "we'll take our time because you cant go anywhere else anyway". It is utterly unacceptable that I should have to meekly sit by and wait for them to deign to resolve my issue when they see fit, with zero communication from them on the daily progress.