TELCEL "MI TELCEL" APP?

On the Amigo prepay plan, the app show the amount of remaining data and such. But below that a Peso amount is shown. Asked at the Telcel store what this meant? Promo Pesos was all I got for an answer.

Ideas?

it's the account balance left over after you bought your plan. I normally don't have one, but somehow ended up with extra and it also triggers a lot of text messages from Telcel. Evidently, if they see a balance they really want you to 'recover' it by topping up.

Thank you!