Dodo is a telecommunications service provider and are based in the Philippines.
I have made a complaint to DODO as I have received several calls where the call disconnects upon answering, On occasions after 9. 30PM.
I phoned them back on 02913XXXX and was greeted to an automated system. I was able to speak with someone and requested to be put on a do not call register.
This number rings you answer goes to a click and hangs up. Rings 3 times a day for the last week.. I have blocked the number but they persist in ringing.