If you call back from the same number they just called you at there are blocking you! so what you need to do is go call through your voicemail . Most VM's can call the number back or let ypu make a message to give them when they answer. Also any number that is not getting calls from the same as you try using another #. Leave a message, I personally left them a detailed message. if they continue to call I will get one of those pretty yellow little boy man things from 1944 and drop one on the call centet. I used to work for asurion it was different.  Ya helped people. Now I'm in Net Eng/IT/BE I told them... I have control over when and how to find you. Cheers! ....that was my msg. Thanks for the narrowed search. Saved hours!