I would like to be able to put my account with two phones in suspension mode for up to 6 months at a time, keeping my telephone #'s that I have had for the past 2 years, while not incurring a rate of $12 +tax per month, 

Some other companies charge a flat rate of $25 or $30 to suspend an account.  Ting does not have such a program.

This could be a good Customer Retention initiative.There are very many people, especially here in Florida, that return every year for a fixed period of time.  Since you have no suspension program as such, when we return in the fall, will I sign up again with Ting, or will another company offer me a better deal for our account?  If you had a suspension program with a flat fee for each account, then you would be guaranteed to keep me, and other people, as customers.  Isn't it easier to retain good customers than to attract new customers?