                 cb(err); return
             cb(undefined, customer_id)
 
-    # id : user's CoCalc account id
+    # id : message.id
     stripe_get_customer: (id, cb) =>
         dbg = @dbg("stripe_get_customer")
         dbg("getting id")

                @database.get_stripe_customer_id
                    account_id : @account_id
                    cb         : (err, customer_id) =>
                        @stripe_customer_id = customer_id  # cache for later
                        for x in @_stripe_customer_id_cbs
                            {id, cb} = x

        locals = {}
        async.series([
            (cb) =>
                dbg("get stripe customer data")
                @stripe_get_customer mesg.id, (err, stripe_customer) =>
                    locals.stripe_data = stripe_customer?.subscriptions?.data
                    cb(err)
            (cb) =>
