It's likely this call is from Prairie Research Associates (Manitoba) with their office in Winnipeg on Broadway. On their website their contact number is 204-987-2030
which is very close to the annoying calls received from 204 987 2041. Again, according to their website, when a call from them is not answered for whatever reason it's put into what they state is a call back queue. Likely everything is automated and their system just keep dialling much to our irritation.
It beats me how they expect anybody to cooperate with them.