Ok so I ended up getting a $4 monthly subscription using Skype for unlimited calling to the US.
I waited for 4 hours (!!!) on hold. In the meantime I power cleaned the house.
Finally got through to a Cast Member. I said I wanted to use the value of the Air Miles 7-day vouchers (which I got from the Air Miles site in 2019 to use in May 2020) to rebook for May 2022.
He put me on hold again. 10 mins later he came back on, apologizing for the wait. He said the tickets were "so old" that he didn't have them in his system. He said they were supposed to be used by 2020. He told me he had to call a bunch of people. He said they were all looking for the value and asked me to please be patient and put me on hold again.
Then the call dropped. Sigh...