diff --git a/src/app/v/[token]/dispatch/_components/refuse-dispatch-dialog.tsx b/src/app/v/[token]/dispatch/_components/refuse-dispatch-dialog.tsx
index 5f85e775..f0cb4cf4 100644
--- a/src/app/v/[token]/dispatch/_components/refuse-dispatch-dialog.tsx
+++ b/src/app/v/[token]/dispatch/_components/refuse-dispatch-dialog.tsx
@@ -12,6 +12,7 @@ import {
   type RefuseDispatchValues,
 } from "@/domain/vendor-portal/schemas/refuse-dispatch-schema";
 import { queryKeys } from "@/infra/query-key/query-key";
+import { guardDialogClose } from "@/lib/dialog-guard";
 
 type RefuseDispatchDialogProps = {
   open: boolean;
@@ -75,7 +76,11 @@ export function RefuseDispatchDialog({
     : "";
 
   return (
-    <Dialog open={open} onClose={onClose} aria-labelledby="refuse-dispatch-title">
+    <Dialog
+      open={open}
+      onClose={guardDialogClose(refuseMutation.isPending, onClose)}
+      aria-labelledby="refuse-dispatch-title"
+    >
       <DialogTitle id="refuse-dispatch-title">Refuse dispatch</DialogTitle>
       <form onSubmit={(event) => void submit(event)}>
         <DialogContent>
diff --git a/src/test/app/v/refuse-dispatch-dialog.test.tsx b/src/test/app/v/refuse-dispatch-dialog.test.tsx
index b5651278..5850a511 100644
--- a/src/test/app/v/refuse-dispatch-dialog.test.tsx
+++ b/src/test/app/v/refuse-dispatch-dialog.test.tsx
@@ -137,4 +137,36 @@ describe("RefuseDispatchDialog", () => {
     await waitFor(() => expect(onClose).toHaveBeenCalled());
     expect(vendorPortalApi.refuse).not.toHaveBeenCalled();
   });
+
+  it("blocks Escape and backdrop close while a refusal is pending, then closes on success", async () => {
+    let resolveRefusal!: (value: { id: number; status: string }) => void;
+    vi.spyOn(vendorPortalApi, "refuse").mockImplementation(
+      () =>
+        new Promise((resolve) => {
+          resolveRefusal = resolve;
+        }),
+    );
+    const onClose = vi.fn();
+    renderDialog({ onClose });
+
+    await act(async () => {
+      fireEvent.click(screen.getByRole("button", { name: "Refuse dispatch" }));
+    });
+
+    await waitFor(() => expect(screen.getByRole("button", { name: "Refusing…" })).toBeDisabled());
+    expect(screen.getByRole("button", { name: "Cancel" })).toBeDisabled();
+
+    const backdrop = document.querySelector(".MuiBackdrop-root");
+    expect(backdrop).not.toBeNull();
+    fireEvent.click(backdrop as Element);
+    fireEvent.keyDown(document.body, { key: "Escape" });
+
+    expect(onClose).not.toHaveBeenCalled();
+
+    await act(async () => {
+      resolveRefusal({ id: 9, status: "Refused" });
+    });
+
+    await waitFor(() => expect(onClose).toHaveBeenCalled());
+  });
 });