public async void LoadData()
        {
            if (_userService.IsAuthenticated())
            {
                username = await _storageService.GetFromCache <string>("username");

                _dialogService.ShowLoading("Loading...");
                var custs = await customerDataService.GetCustomersForMarketer(username);

                if (custs != null)
                {
                    Customers = custs.ToObservableCollection();
                    _dialogService.HideLoading();
                }
                else
                {
                    _dialogService.HideLoading();
                    _dialogService.ShowToast("Hey! You have not yet added any Customer.");
                }
            }
        }