Various Betamax voip sites not accepting new accounts/or credit cards

[andy]

Be careful when setting up several accounts, especially if using up the free trial calls on each, or if attempting to use a credit card for an account in another country, as you'll be flirting with their fair use and anti-fraud policies.

You might try uninstalling the clients you don't need, including their application data folders, but I don't actually know whether this will remove any flags and other problems you've acquired so far