I think background checks may already be over by now. They've been saying the same nonsense to me for months. The officer just hasn't picked up our cases.
My understanding is that there needs to be some kind of a big update for them to open our cares like medical expiry or addition of a spouse, dependent etc.
Backgrounds checks for me was over on 4th June, the day my husband got request for Re-medical. Post that the application was stuck for more than a month.
We received our PPR on July 23rd and I have been calling the whole of June and July and each day they would tell me Background is in process and there is RR.
The day our file got approved as we got got COPR (I submitted passport in India and my husband in Canada) all the dates were were visible on our application and there it showed BC was completed on 4th June!!
So basically, these agents are their statements are useless, they hardly check ur profile and give you an update on your status.