diff --git a/services/advoware_service.py b/services/advoware_service.py
index bcd3da3..8a253dc 100644
--- a/services/advoware_service.py
+++ b/services/advoware_service.py
@@ -20,6 +20,10 @@ class AdvowareService:
         self.api = AdvowareAPI(context)
         self.context = context
     
+    async def api_call(self, *args, **kwargs):
+        """Delegate api_call to underlying AdvowareAPI"""
+        return await self.api.api_call(*args, **kwargs)
+    
     # ========== BETEILIGTE ==========
     
     async def get_beteiligter(self, betnr: int) -> Optional[Dict]: