Chexy charged my credit card for my monthly mobility bill, but the PAD withdrawal failed according to Bell

Hello, as described in the title, the monthly PAD withdrawal that I have set up for my Bell postpaid mobility bill failed according to a Bell CS rep that I just chatted with. I can also see a warning in my online account stating the same.

Curiously, Bell was also unable to withdraw for last month's bill. The Chexy rep that I chatted with confirmed that it was a system error on Chexy's end and promised me that they'd reimburse me with any NSF fees and also assured me that that this month's bill would be paid. That obviously didn't happen.

I have already paid Bell directly for the failed withdrawal for last month's bill because I managed to trigger a refund myself after a few clicks in my Chexy account. However, I don't see any such option for this month's failed withdrawal.

Since I would like to avoid any service disruption and don't want to charge my credit card twice, I just wanted to confirm - would I be eligible for a full refund from Chexy, including the processing fees, since the error seems to have been on Chexy's end?

IDT Chexy's customer service will be responding until Monday morning, so any help would be much appreciated. Thank you