That's a lot of having $1300 worth of BCH. If you haven't mistakenly copied coinbase BCH address then those coins should be on your coinbase wallet.Its odd that
it didn't credit out.If that's the case then you wont really have any option but to contract their support.

Call
+1 888 908-7930 (US/Intl)
0808 168 4635 (UK)


https://support.coinbase.com/customer/es/portal/emails/new