I used neither for that. I communicated via other means, but somehow our data is being accessed by them.Did you use FaceBook/FB Messenger or WhatsApp?
The complexity and scope of the data collection system is something that takes a while to get your head around. Even if you take every precaution to protect your own privacy it's dependent on the receiver to do the same. If you have been looking at bathroom fittings on line and that data is available, then you call your management company in the same time frame it's not too difficult to surmise it might be about bathroom maintenance. Either way it's worth a shot.
One day I was talking with someone about him meeting Daniel Radcliffe in NY… and then, all of the sudden, YouTube exploded showing me recommendations of meeting Daniel, something I never ever searched for. That was so creepy.