I have gotten many numbers who have done this to me. I swear I have not signed up for anything that involved my phone number. When I awnserd I said "stupid spams stop calling me or I swear" then hung up
These people calling me everyday. I don't have any credit card with HBSC. The same caller comes under"HFS' (Caller ID) and calling under different phone numbers but same caller ID. 650-273-4089, 209-266-7098,707-343-9352,816-744-4103 and 310-593-9616. I don't know why they calling me and they did not leave a message. I get 2 to 3 calls daily to my phone number.