Harry has been on hold since 1999, so he spent his life savings to travel to Las Vegas to the 16th Annual Call Center Convention to figure out why. Did you know there was such thing as a Call Center Convention? Of course this snooze-fest convention had to take place in the City of Neon Love in order to be even remotely interesting.

Even though the simple answer to his question of being on hold is "because you never hung up the phone, Harry," he's clearly looking for a more in-depth response to his query. Most of the call center representatives' convoluted responses make literally zero sense, and he might as well just ask the hold music to help him solve his somewhat existential crisis. 

Sources: YouTube