I get these too, except it's a cell phone bill for someone in Malaysia. I've tried repeatedly contacting someone at the company but all mails to them get return

I get these too, except it's a cell phone bill for someone in Malaysia. I've tried repeatedly contacting someone at the company but all mails to them get returned as mailbox is full (it's 2012, how is anyone's mailbox full!?) and so they continue. I've even tried tweeting them but no luck. At this point I just mark it as spam, so sorry anyone in Malaysia that uses Celcom if your bills are going in to your spam folders.