A media campaign is encouraging Quebec residents to see if they qualify for reimbursement.
"This is a massive win for Canadians," Distributel's CEO says.
The Liberals promised to reduce plan prices by 25% within two years.
False narratives about 5G technology have led to attacks in Europe.
Rogers, Bell and Telus must reduce costs by 25 per cent in two years.
The company is asking the Competition Bureau to investigate.
More calls were about Bell services than any other provider.
Shares fell more than six per cent in trading Wednesday after the company warned it has become a victim of its own success.
A service outage that started with Rogers also disrupted Bell, Telus and Freedom Mobile.
The CRTC expects telecoms to have them readily available by April 2019.