Customer Service and Retentions departments need some training

I have been a loyal client for many years. In Decemeber 2022 I had to cancel 2 data contracts for financial reasons. Only 1 contract was cancelled, and I have now been billed 3 times the original amount on the other contract. Customer service email which promises a 24 hour turn around is beyond useless, after 3 days when I finally got a response they completely ignored my problem and demanded money. I have paid you your money, and will most definitely be switching providers. Here's hoping this gets me the refund I am due, although I highly doubt it.