I. WANT. TO. CALL. SUPPORT! Nothing is more infuriating than having a problem, and being endlessly redirected from a FAQ to user forums to email. Email gets me a canned answer from Bob, who didn't read my mail for more than 7 seconds. Replying to said mail gets me Chuck, who's very sorry Bob couldn't help me..and then pastes the same canned answer. With a phone, you're not running totally stateless, and can actually…
Maybe the underlying problem here is that people increasingly assume calling won't help them actually make progress towards solving the problem. Years of dealing with tedious phone menus, call centre staff who literally can't understand or speak basic English properly, and often call centre staff who don't have the authority or capabilities to do anything useful to fix the problem anyway, have taught many customers that calling will be a waste of probably significant amounts of their time.
I'm not sure how fair that really is, but phone support seems to be increasingly polarised these days. Some organisations still take it seriously, and you can speak reasonably quickly with someone helpful and knowledgeable. In these cases I often find the phone support is the fastest way to find reliable information or solve a problem. Other organisations are more like the stereotype I described above, and I confess to having very little patience with them these days. If I'm calling because an automated system already wasn't working well enough, and I don't get a confident feeling about the phone support almost immediately, I don't mess around any more: if it was an enquiry about a sale, they probably just lost that deal, and if it was a significant problem or complaint, they're probably getting a letter with verified delivery instead.