Why all the "Routine Maintenance"?

I work from home and this maintenance has caused me some headaches and even a write up with them. I have had it 4 or 5 times in the last two weeks Why are all these necessary? This is supposed to be a reliable company with a reliable connection. I understand, things happen. But, this many times? I live in the North Phoenix area (bell and 7th st). I do not mean to come off harsh, it is just that my job requires me to be on the phone and take calls from customers and even today I had issues with customer's hearing me because there was "Routine Maintenance" going on. Anyway, sorry for the rant. Hopefully, you all will have an answer and if I should expect more Maintenance this frequently in the future.