Do I still pay when there is no service?

For the third time in the last two months, my landline service has failed. The first two times took several days to fix, and I am waiting for my appointment for it to be restored for the third time, which was scheduled for nine days after I reported it. How do I go about getting credit for the extended time that I have been without service? I can understand losing a few hours here and there, but it is unreasonable to think that I would have to pay full price while having no phone for around two weeks within a two month period.