Poor customer service poor client relations

I placed an order on the pizzahut app in February for a group of us, payment was processed but never received my order number. Called their call center and they requested proof of payment which I sent through. They then connected me to the store manager, Norwood branch, which I ordered from, he wanted a bank statement, which obviously at the time had not been generated.

Months later, now in August, I've sent the call.center and store,countless emails and made multiple calls, always stating that they will escalate.

I've sent proof of the money being deducted from my account and zero response from all forms of communication.

6 months of no response and no refund.