Harrassing calls. They say they are Blue City. This is an unlisted mobile number.

so we've been getting alot of calls from this #. we don't answer it, i suggest you don't either. so many calls from one unlisted cell # got us into a right mess along time ago, so we are being very carefull with this one.

just got a call from this number, no message was left.

Thanks for the info, ?I just received call and like you I didn't answer. (I never do if I don't recognize name or number).  They didn't stay on long enough for my voice mail to kick in.

Just got a call from this number too.  Didn't answer cause I didn't recognize it - and now I won't answer in the future because you were kind enough to let me know it is just someone else wanting to waste my time.

2 calls from this number within 5 minutes! Must be desperate to get hold of me. Ignored it both times because I let numbers I don't recognize go to voicemail. Another call from them and I'll just block the number. Probably the survey like others have said.