GringoPost | Cuenca, Ecuador: How to stop being charged for unsolicited advertisements on cellphone?

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How to stop being charged for unsolicited advertisements on cellphone?

I keep receiving text advertisements on my cheap Claro cellphone, for which I am charged $.20 or more for each one. My cellphone balance is declining rapidly. In the past I was told that I can input a text reply of Salir to opt out of receiving these unsolicited ads, but that has not always worked. Has any GringoPost reader found a successful solution?

Thanks,

Gil: ghc_3@hotmail.com

City: Cuenca