State Public Utility Commissions (PUC) have established very specific rules as to how a partial payment must be applied. Their intent is to protect regulated services, such as your home phone. As a result, in most states, undesignated partial payments are applied to the phone portion of your bill until that portion is paid in full. Any remaining money is paid proportionately to all the other charges on the account. This is called a "pro-rata" allocation.
If you'd like to pay your bill using more than one payment source, you certainly can. You'll just need to make each payment individually. Simply enter the amount you want to pay with your first payment source and complete that transaction. Then repeat the process using the second payment source. You can make as many payments as needed.
There's really only one limitation. We can't accept multiple payments of the same amount from the same payment source on the same day. This is for your security, and also to ensure customers don't accidentially pay us twice. You can make payments of: