Issue: Smart forced an unwanted postpaid add-on/booster

Me again on a Smart postpaid issue. just a couple hours ago, i received a text that i am registered to a booster with an additional payment on my smart postpaid plan. i did not agree to this nor click on anything on the smart app. we called the smart customer service and they said that we can rebuke it on the first payment next month, but i want it cancelled asap. nakaka harrass from smart eh. meron po ba dito na same situation as me?