diff --git a/modules/turnero/views/chat.php b/modules/turnero/views/chat.php
index 0ac7df7..c5c4ae8 100644
--- a/modules/turnero/views/chat.php
+++ b/modules/turnero/views/chat.php
@@ -525,10 +525,12 @@ function closeChatMobile() {
 // ── Mensajes ──────────────────────────────────────────────────────────────────
 async function fetchMessages() {
     if (!state.activeUserId) return;
-    const url = BASE + API_MESSAGES + '?user_id=' + state.activeUserId + '&limit=50';
+    const forUser = state.activeUserId; // captura antes del await
+    const url = BASE + API_MESSAGES + '?user_id=' + forUser + '&limit=50';
     try {
         const res  = await fetch(url);
         const json = await res.json();
+        if (forUser !== state.activeUserId) return; // usuario cambió mientras esperaba
         if (!json.success) return;
         state.messages     = json.data;
         state.hasMore      = json.has_more;
@@ -541,14 +543,16 @@ async function fetchMessages() {
 
 async function loadMoreMessages() {
     if (!state.activeUserId || !state.earliest) return;
+    const forUser = state.activeUserId;
     const url = BASE + API_MESSAGES
-        + '?user_id=' + state.activeUserId
+        + '?user_id=' + forUser
         + '&limit=50'
         + '&before=' + encodeURIComponent(state.earliest)
         + (state.earliestId ? '&before_id=' + state.earliestId : '');
     try {
         const res  = await fetch(url);
         const json = await res.json();
+        if (forUser !== state.activeUserId) return;
         if (!json.success || !json.data.length) {
             document.getElementById('loadMoreBtn').style.display = 'none';
             return;
@@ -563,13 +567,16 @@ async function loadMoreMessages() {
 
 async function pollMessages() {
     if (!state.activeUserId || !state.lastPollTime) return;
+    const forUser    = state.activeUserId;
+    const sinceTime  = state.lastPollTime;
     const url = BASE + API_MESSAGES
-        + '?user_id=' + state.activeUserId
+        + '?user_id=' + forUser
         + '&limit=50'
-        + '&since=' + encodeURIComponent(state.lastPollTime);
+        + '&since=' + encodeURIComponent(sinceTime);
     try {
         const res  = await fetch(url);
         const json = await res.json();
+        if (forUser !== state.activeUserId) return; // usuario cambió mientras esperaba
         if (!json.success || !json.data.length) return;
         json.data.forEach(m => {
             if (!state.messages.find(x => x.id === m.id)) {
@@ -578,7 +585,7 @@ async function pollMessages() {
             }
         });
         state.lastPollTime = json.data[json.data.length - 1].created_at;
-        markRead(state.activeUserId);
+        markRead(forUser);
         loadContacts(document.getElementById('searchInput').value.trim(), true);
     } catch(e) {}
 }