Inconsiderate manager at Toys R Us

We bought a twins stroller in February 2020 at Toys R Us Mall of the North. Mid June one of the twins passed and July we decided to take it back since it wouldn't serve its purpose anymore. Because of the lockdown, the stroller was never used. When we returned it the manager didn't even look at it yet he refused and said he won't take it back. Three days later we went back to the store and the assistant manager looked at it and said it was fine they will take it back and we should come back when we have our credit card for our refund because their gift card machine wasn't working. Planning to go the next day for the refund, we were woken up by the manager saying we should fetch our stroller he doesn't want it in his store. The stroller has since been with them and they haven't said anything. The head office is failing to help us because all they say is that the decision is made by the store manager and he told them that it is dirty so he doesn't want it. My reason for taking it back was part of my healing process because seeing it everyday wouldnt help me in any way.