diff --git a/lib/call-session.js b/lib/call-session.js
index aa745d8..dc9fa53 100644
--- a/lib/call-session.js
+++ b/lib/call-session.js
@@ -428,12 +428,15 @@ class CallSession extends Emitter {
 
         if (process.env.JAMBONES_HOSTING || trackingOn) {
           const {writeCallCount, writeCallCountSP, writeCallCountApp} = this.req.srf.locals;
-          await nudgeCallCounts(this.logger, {
-            service_provider_sid: this.service_provider_sid,
-            account_sid: this.account_sid,
-            application_sid: this.application_sid
-          }, this.decrKey, {writeCallCountSP, writeCallCount, writeCallCountApp})
-            .catch((err) => this.logger.error(err, 'Error decrementing call counts'));
+          if (!this.req.locals.callCountNudged) {
+            this.req.locals.callCountNudged = true;
+            await nudgeCallCounts(this.logger, {
+              service_provider_sid: this.service_provider_sid,
+              account_sid: this.account_sid,
+              application_sid: this.application_sid
+            }, this.decrKey, {writeCallCountSP, writeCallCount, writeCallCountApp})
+              .catch((err) => this.logger.error(err, 'Error decrementing call counts'));
+          }
         }
 
         /* write cdr for connected call */
diff --git a/lib/middleware.js b/lib/middleware.js
index a3f2789..d98c0a8 100644
--- a/lib/middleware.js
+++ b/lib/middleware.js
@@ -261,7 +261,8 @@ module.exports = function(srf, logger) {
 
     /* decrement count if INVITE is later rejected */
     res.once('end', async({status}) => {
-      if (status > 200) {
+      if (status > 200 && !req.locals.callCountNudged) {
+        req.locals.callCountNudged = true;
         nudgeCallCounts(logger, {
           service_provider_sid,
           account_sid,
diff --git a/test/docker-compose-testbed.yaml b/test/docker-compose-testbed.yaml
index 688d708..e3b7338 100644
--- a/test/docker-compose-testbed.yaml
+++ b/test/docker-compose-testbed.yaml
@@ -23,7 +23,7 @@ services:
       sbc-inbound:
         ipv4_address: 172.38.0.2
   sbc:
-    image: drachtio/drachtio-server:latest
+    image: drachtio/drachtio-server:0.8.26
     command: drachtio --contact "sip:*;transport=udp" --loglevel debug --sofia-loglevel 9
     ports:
       - "9060:9022/tcp"