I hope DHL is aware that there is a mobile number ...

I hope DHL is aware that there is a mobile number +65-97244787 impersonating as DHL branch office at Changi Airport asking customers to verify their phone number by pressing "9" at the end of the message (delivered in mandarin), which leads to nowhere. I am posting this as I have received at least 3 attempts from these types of suspicious calls using DHL as their Identity.