I get this call too,from so called warranty service. I heard on a radio talk show to answer and immediately hang up this confuses the system and sometimes makes it crash. Not all the time .but give it a try.
Woman said she is with the Vehicle Warranty Center and asked how I am.... I responded, "Good. How are you?" and she was completely silent for about 5 seconds and then hung up on me. WEIRD! I already had a feeling the call wasn't legit but come on... So sick of telemarketers.