Swoop Airlines complaint: Will not complete refund that they offered!

Swoop cancelled a flight, I had to rebook with an alternative airline as there was nothing available with Swoop for several days priorafter the desired date. I opted for a refund; I have received the refund for the seats that i have paid for but not the flight itself. I do not own a card with the last for digits listed on the receipt they have provided. I have been trying to reach a (human) customer service rep for weeks. The phone is not available, and the only email i can find is a feedback form which tells me i will not be receiving a response. The chat options are bots who cannot seem to connect me to a human to resolve this. I am looking for my entire refund! I have tried to lodge a complaint through the BBB but was informed that Swoop has chosen not to respond to complaints through third parties and therefore, we cannot assist in facilitating conciliation for your dispute.. Unfortunately i think i have lost my money at this point.