Before you dial any of 10-10 services, do your homework. Know your personal calling pattern. Check your regular long-distance carrier rates. Compare the dial-around rates. Know where to call with billing problems.
Some rebates are instant cash that can be redeemed immediately at the checkout counter.
But most rebates must be mailed to the company along with documentation that you paid full price at the time of your purchase. By law, companies must send the rebate by the time promised, or if not specified, within 30 days. Unfortunately, some rebates never arrive, or come much later than promised. Make a copy of all the paperwork you are mailing along with the rebate form. This is the only way you can prove you sent for the rebate.