RCI Timeshare-constantly call using various phone numbers, have repeatedly asked them to take me off their list. They have even cursed at me, they are awful!

Call came in on my mobile at 12:29 P CDT, I didn't answer since I didn't recognize the number and they didn't leave a voicemail. This call was from the 13th different number they have used from five different Area Codes since July 2015. They call, I BLOCK. They have called my mobile, which has a Call Block app, and our landline which has a Call Blocker unit that can store up to 1500 blocked numbers.

The call from 424-280-3573, was 2 calls, same day, 96 min apart.  Funny!  The caller ID had V70810525700502 . The second call I received from 424-280-3573, had V70812283700502 in the caller ID.  Hmmm,  the 424 # has to be a front for the other 2 #'s.  Being curious as to the possibility they were real phone #'s, I put the two above with 708 as the area code, using it and the next 7 digits, it came up on 800notes as being from Illinois.  Notice the last 4 digits are the same, maybe an extension #?