roommate dispute - opinions?

[jfresh]

situation: Person A, B and C are room mates. Their lease is up at the end of the month, but person A needs to move out 2 days earlier because his job starts before the lease ends. Their apartment had cable tv and internet, both billed under Person A's name. Person A calls up the cable company, and arranges an equipment pick up on the last day of the lease. He okays it with Persons B and C, who confirm they can stay to make sure the equipment is picked up and taken care of.

Fast forward 2 weeks, Person A comes back from 2 weeks away from home because of work, and gets a large bill from the cable company saying they need their equipment back. He then calls Person B, who says no one came by on that date, and he ended up leaving the stuff with their land lady.

Now, the question is, did Person B (and C) do anything wrong?