ZONG always focus es on giving you innovative products to make your life easier! This time around ZONG presents ZONG Promotional SMS Blocking Service. A unique service through which you will be able to restrict promotional SMS from the comfort of your homes and offices. No need to walk into a Customer Service Center, call the helpline or fill up forms.To block promotional SMS, enter your number and you will receive a PIN Code, enter that PIN code on the website to block all promotional SMS. To unblock promotional SMS just enter your number and unblock the promotional SMS.