https://www.richmond-news.com/news/canadian-residents-may-receive-cra-phone-calls-this-month-1.24204943
Residents can then contact and verify the information with the appropriate CRA departments such as the following:
1-800-959-8281 for the individual income tax enquiries line
1-800-959-5525 for the business enquiries line
1-888-863-8657 for individual debts
1-877-477-5068 for GST/HST debts
1-877-548-6016 for payroll debts
1-866-291-6346 for corporation debts
1-866-864-5823 if the call you received was about a government program such as employment insurance or Canada Student Loan debts
Residents who believe they have received a potential scam call or are a potential victim of fraud are asked to report it at antifraudcentre.ca or by calling 1-888-495-8501.