I also get the DHL scam calls. Once I tried telling them that I was American and didn't speak Chinese (which is about the extent of my very rusty Mandarin knowl

I also get the DHL scam calls. Once I tried telling them that I was American and didn't speak Chinese (which is about the extent of my very rusty Mandarin knowledge) and it stopped the calls for a couple of months. That tactic did not work the second time around, though. :(