Hmmpt. They can block the number either it is a prepaid or a postpaid. Ang alam ko eh need mo itong i report sa hotline then dapat yung message ay nakasave sa cp mo. Much better kung may screenshot tapos ipapadala mo sa [email protected] para documented.
This just happened to me a few minutes ago. Same number. Whoever it is might be doing it to several subscribers and worse, could be an inside job...