I currently have the $15 unlimited text base plan. 100 voice min for $10 booster plan. I signed up for auto top up and also received the bonus 100 min voice booster. Recently I bought a $25 top up card and have $5.00 in my account. I decided to get the 1 GB data booster. Questions.. Once my voice and/or data booster is low, and I want to top up by using a top up card or credit card, how do you allocate the money to the booster that needs topping up? If I decided I don't need a data booster anymore (once funds are very low or none left) how do I cancel the data booster?