Too hard to speak to a comcast rep - I gave up

Something I should have been able to do online - add voicemail to one of our phone lines.  Nope- No can do.

So, I call support.  10+ mins to get a human response.  (off shore)  Only to be re-routed to someone who can actually add/change a feature.  10+ mins later, still no human to talk to.  

I gave up.  I have work to do.

I expected more from Comcast Business.  Is it me, or has support quality totally fallen from a year or so ago when I could speak to local people who could help me straight away!?