Who called from 5203602659

I keep asking them to stop calling me and they continued to call. I told them I dont have a credit card for your company. They call at least once a month every month. How do i stop the madness.

They called my sister Kor's phone but I didn't answer since I didn't know the number. Left no message.

Just received a call on my cell phone from this number. Called back, said mailbox was full & can't accept any messages.

Have received 2 calls from this number on July 2, 2010.

Calls repeatedly but leaves no messages. Scammers