WestJet Airlines review: Seating issues on two flights

Good day;

We just flew back to Ottawa from Orlando with a stop in Toronto. The last leg of our flight as well as the flights to Orlando were fine but the flight from Orlando to Toronto was not good. I was flying with my wife, two of her daughters and our two grandchildren, a 10 yr old girl and a 14 yr old boy who is autistic. I was informed by one of your staff that the booking agent had made a mistake on the afore mentioned flight and out seats were not locked in. this resulted in our family literally being spread from one end of the aircraft to the other. only thanks to your gate staff in Orlando were we at least able to get the children seated with their mother. I am sad to say, this is the second time we have had this problem on your airline. The last time we traveled was before the pandemic and that time, although the gate staff were also able to seat the children with their mother, one of the female cabin crew over-rode the changes so that she could sit in two of the seats that we had been assigned to. I hate to say it but as much as I dislike Air Canada, we have never had issues like this on any flights on that carrier. The last time, we let it go but twice out of two flights? I just find this unacceptable. Because I couldn't get seating info until I checked in (I tried from 11am onward and finally got checked in at approximately 10:30 pm) we had to wait until we got to the airport to address the issue. As a result, our last day in Florida was< for me, spent trying to get us checked in, wasting my Universal Studio Park ticket and causing a lot of anxiety for the rest of my family. Our grandchildren were unfortunately aware of the issue and are saying that they don't want to fly ANYWHERE now on ANY airline. Once is an oops. Two for two is negligence. I'm retired from the RCAF and am VERY interested, as is my family, to see what, if anything, WestJet will have to say about this (these) issue(s).