Why so many outages in my area?

These past 3 weeks, my internet and TV service disruptted many times on random days and times. The outage map only shows an estimated time of service coming back but no reason shown. I called xfinity and they can't see the cause of these outages either. This is very frustrating as I have to work from home. Sometimes these outages can last from 1 to 2 hours. Why is it so difficult to find out the cause and get this fixed permanently?