My understanding is that Telus retains a copy for 90 days but the contents are not available to any front line support reps. (A long time ago they were and they had a place you could see your own online, but abuses of both online and front line support access led to it being more restricted)
You may also be able to request a copy of your records from the privacy officer at Telus.
You may contact the TELUS Privacy Request Centre at 1-800-567-0000 or email us at email@example.com.
They would also be available under a court order from their security/legal department but still for that 90 day window of retention.
But 2019 is far beyond their 90 retention so this specific example you would be out of luck.