Even if you don't have online banking on the website of Bank of Communications, you can register on the website, and then you can only look at the consumption details inside, but you can't spend.
The money must be spent clearly. Please call or check on the website as soon as possible. I've used the Bank of Communications card for five years, so it's unlikely that you said it. Please see if you forgot to spend it, or if it was consumed by others. Don't deny it and find trouble with Bank of Communications.
At present, the most important thing is to look at your consumption records.