Corodata, Poway CA

For several months in 2022 Corodata sent invoices to me that showed a credit balance balance (approximately $2000). When i closed the account (in 2022) Corodata told me (more than once) that they would send me the appx $2000 credit balance. Several months have passed and I have never received the refund check. I called just now (on 2-2-2023) and a Corodata employee told me that Corodata found a "bookkeeping error' and that they did not owe me a refund. Please draw your own conclusions as to whether you should work with this company.