🐛 Fix Equals method in Account.cs

src/Banquale/Model/Account.cs

@@ -198,7 +198,7 @@ namespace Model
         public override bool Equals(object obj)
         {
             if (obj == null) return false;
-            else return obj.IBAN.Equals(IBAN);
+            else return obj.Equals(this);
         }
 
         /// <summary>