Sounds like another Asian Call Centre

as above , called back couldn't connect ect, possible scam locking onto prepaids and zap yur dollars,,,,, just block the number on yur mobil,,,, wont happen AGAIN

I've been expecting a call with test results for blood test (maternity), and I know they sometimes use automated numbers like this to send out messages (my hairdresser and doctors office both send messages you reply "Y" for confirming appointment, which you can't call back), that's my best guess, but who knows, it could be charity.

Missed call on 29th called back, call cannot be connected..

Returned call instantly and got "Call can't be connected please hang up and try again."

Probably a scam.

They called - but when I tried to call back missed number it said "Call can't be connected please hang up and try again. Very strange!