Alleged they were doing some sort of television rating survey

random no voicemail left

Caller: Market Research Centre

Didn't answer, unrecognised number. Called back, recorded message advising this is a market research centre. Blocked.

A female called at 7.20 pm claiming to be researching TV viewing for ratings etc. Called on my mobile number which very few people have. She claimed it was a random, computer generated number when I asked how she had obtained it.

Caller: TV Ratings

Asked too many intrusive questions not related to TV - suspected actually a scammer. Hung up and blocked

I did not answer. Similar calls from this number with the last 2 number changed. Every other day.

Number was deactivated by time I returned call. Likely scam.

Was suspicious from the start and when I answered I did not say hello heard breathing on the end of the line and they hung up

unknown - random

Suspicious seemingly random