Received a robot call on my cell 'phone from this number regarding lowering my credit card interest rates. I pushed "1" as option they gave to speak to a "real live operator", intending to ask that my name be taken off their call list. Instead, my call was disconnected. I called the number back immediately and received a phone company message that "this number has been disconnected or is no longer in service." I repeated twice and got the same response. I also called from another number in case my cell number was marked for non-response, but got the same response from my second number.