I was talking to an OC that I was having issues with on a account that went in to collection.
While I was talking to him he let it slip out that they(OC) tell the CA to only report it paid for a year. then they work update anymore.
In my case I paid but he allowed me to do a PFD..
It sounds like you need to do a Dispute with the CRA.
Also when you dispute to the CRA i think all they do is look at the info that the OC or CA sent and compare it to what is on you CR.
just an idea. Dispute the date or amount or that it never went to colections so that they have to request this info from the CA or OC. Hopefully they wont respond to the CRA
Best of Luck
Chuck