Unwanted phone calls can be upsetting threetees. We do offer a feature called Call and Message blocking. Is this the feature you were trying to use online? What exactly happened when trying to block the number. For directions on how to block a number online via My Verizon click, http://vz.to/1BtpZTp
MichelleS_VZW Follow us on Twitter @VZWSupport If my response answered your question please click the "Correct Answer" button under my response. This ensures others can benefit from our conversation. Thanks in advance for your help with this!!