Also received a call rang twice then they hung up

Also received a call. The caller ID was 'Manitoba'. They hung up without a word on the answering machine.

Caller, MANITOBA  ( displayed as ID on our phone, called us @ 18:33 , 02.01.2016. It left no message.
We opted not to answer :" unwanted call " per www.ftc.gov ( www.donotcall.gov.) suggestion. We bother to return the call hiding our number to find our who is the caller, company name or a spoofed number from MANITOBA, Canada????
The caller has used this number 204-555-0191 since 01.21.2016 according http:800notes.com above.
I'll report it to FTC & FCC.

This guy is from Singapore trying to scam my elderly Dad out of $150. Selling him an "internet blocker"  the phone # is a gateway for them to call over here fro free.

Received a call rang @ 7:52pm, no answer  then they hung up.