The phrase "a complicated call" is correct and usable in written English.
It can be used when referring to a decision or situation that is difficult to navigate or understand.
Example: "Deciding whether to accept the job offer was a complicated call, given the potential impact on my family."
Alternatives: "a difficult decision" or "a tough choice".
And sales through official distributors have been weakened by prices that are substantially higher than in the United States (about $864 upfront for the 3GS model with a complicated calling plan requirement of a two-year commitment that involves an additional monthly fee), driving a brisk underground trade in smuggled goods.
Going with a three-man rotation during the final two playoff rounds last season was a less complicated call for the Yankees.
They almost always had to be in front of a computer to initiate a call, or go through complicated call, then hang up and call back procedures.
In one study, groups and individuals were given a complicated card game called the Wason selection task.
For example, too many companies settle for complicated call center voice automation systems.
A complicated dish called king crab rolls was another miss: a tasty seafood filling encircled with tough phyllo pastry.
In Korean tradition, there's a complicated emotion called han which, by general consensus, applies chiefly to women.
(He still plays cards, and this year he spent his birthday in Las Vegas, immersed in a complicated game called Chinese poker, which involves playing three hands at once).
One suspects that this was where he got one of the ideas for this article, expressed in a complicated table called "A Model Protocol for Shaping the Time-Space Relationship".
A display features the bird cage, light bulb and hammer used for a complicated trick called "The Canary and Light Bulb" in which a canary miraculously survives a near-death experience.
