If you find an inaccuracy in your credit report you will want to contact Equifax and Transunion at the number below and have a copy of your ID handy with the letters of confirmation of the inaccurancy to forward to them.
Doing this as soon as an inaccuracy is found will help with the improvment of your credit score, which will result in better mortgage options for applicants.
Equifax Canada Inc.
Consumer Relations Department
Box 190 Jean Talon Station, Montreal, Quebec H1S 2Z2
CALL: 1 800 465 7166 between 8:00am and 5:00pm ET
Transunion Canada
For residents outside Quebec, please contact us between the hours of 8:00 a.m.-8:00 p.m. ET at 1-800-663-9980