public function wtwTransfer(WtwRequest $request, Account $account)
 {
     $wtwAmount = $request->wtwAmount;
     $receiverName = $request->wtwReceiverId;
     $wtwPin = $request->wtwPin;
     if ($wtwPin != User::where('id', Auth::id())->first()->pin) {
         return redirect()->back()->with('message', 'Invalid PIN');
     } else {
         if (User::where('username', $receiverName)->first() === null) {
             return redirect()->back()->with('message', 'Invalid receiver name');
         }
     }
     return $account->wtwBalanceTransfer($wtwAmount, $receiverName);
 }