Any Telus (AS852) BGP customers in the house?

Hello! As a fellow AS852 BGP customer, I’m looking to chat with other AS852 BGP customers on the topic of modifications to the prefix filters attached to your BGP session(s). Specifically, understanding the procedure Telus wants you to follow to request any changes, how long it takes the requested changes to be implemented, and whether or not there are any costs associated with those changes. Off-list is probably appropriate. Thanks in advance!