My parents aren't telling me anything. I did all the paperwork for his visa and he needed a sponsor. Someone who would agree to pay for everything for him so that he would never need help from the country. I know because I filled it all out. He was not financially independent so he needed a sponsor.
Who are the "they" to whom you refer? Seems like your parents are telling you this.
Anyway, you have been given correct advice here. Despite your mistaken view, neither you nor your parents "sponsored" your husband's TRV. Just not possible. If it were, I would have succeeded in getting my wife a TRV. I could afford any costs she might incur in Canada for decades. But the IRCC was not interested in my resources or my willingness to pledge them; not at all.
Yes, you and/or your parents may have written a letter of invitation. Therein, you may have done, as did I with my wife, stated an intention to bear all the applicant's expenses. But that counts for nothing and the IRCC would not and cannot enforce that kind of non-contractual promise.
