Thanks MxM!
Cue, a/c is short for account = bill, and a quite commonly used crossword abbreviation.
Another "two for the price of one" to tease you at the weekend: no connection except that both are from a recent newspaper puzzle and each answer happens to have eight letters.
1. Writer of rhymes, say, is Tennyson (8)
2. Risk death getting wind up (8) - two es
