We use SMS for network monitoring (although we've had a lot of problems with clickatell and their APIs not working properly).
However, if you're wanting to be alerted of support tickets then why not find a phone with a cheap data plan and set up an email client on the phone which will check for support tickets? Same again could work for monitoring your network on the cheap, using an off-site IMAP server.
For the sake of a few dollars/euros/pounds we'd prefer to just sign up for a multitude of server monitoring sites and have them monitor key servers in our network, true if anything happens we'll get bombarded but if i've fallen asleep it is sure to wake me.
If a company (or its management) won't pay the few dollars to monitor their network then I'm not sure why they would have any customers.
just my 2 cents/pence/eurocents/other random currency