add disable customer function

lib/pages/term/model/term_model.dart

@@ -1,7 +1,7 @@
 import 'dart:async';
 
-import 'package:fcs/data/services/services.dart';
 import 'package:fcs/domain/vo/term.dart';
+import 'package:fcs/helpers/firebase_helper.dart';
 import 'package:fcs/pages/main/model/base_model.dart';
 import 'package:logging/logging.dart';
 
@@ -10,7 +10,6 @@ class TermModel extends BaseModel {
 
   Future<void> saveTerm(Term term) async {
     await request("/terms", "PUT",
-        payload: term.toMap(),
-        token: await Services.instance.authService.getToken());
+        payload: term.toMap(), token: await getToken());
   }
 }