before you text STOP to the number, call your cell phone company - they will see there has been NO text from you to the company to initiate any charges - and request that they remove any charges from your bill. Then ask them in all innocence what you should do *blinks innocently* - they will tell you to text STOP to the company. That way you get the charges removed AND cure the problem! Act really upset about the jokes too like you just found your cell phone filled with spam or dirty jokes or pictures of your grandma in her bikini or something!