The On-Call help service is an extremely convenient service for those who want help on the spot, to get their questions cleared up immediately. At any time, if you run into a math road block while working on a GMAT math problem, just give me a call, leave a message, and I will get back to you within 2 hours (in most cases, within 30 minutes).
To take advantage of this service, you must pre-purchase hourly On-Call support credits by clicking on the “buy now” button to your right. You are then free to use up your credits in any time increments you choose, without hassle.
