diff --git a/source/app.d b/source/app.d
index 62baf4c..1478963 100644
--- a/source/app.d
+++ b/source/app.d
@@ -137,6 +137,8 @@ class ApiClient
 	private string _sessionId;
 	private int _requestCounter;
 
+	private bool _busy;
+
 	this(string locale)
 	{
 		_locale = locale;
@@ -196,6 +198,13 @@ class ApiClient
 
 	string getAccountAvailable()
 	{
+		while(_busy)
+		{
+			sleep(10.msecs);
+		}
+
+		_busy = true;
+
 		auto clickImageEvent = createClickImageEvent("Container@reuse_Screen@img_Account");
 
 		auto widgetEventsRequest = new WidgetEvents("Container", [clickImageEvent]);
@@ -210,6 +219,8 @@ class ApiClient
 
 		goHome();
 
+		_busy = false;
+
 		foreach(widgetUpdate; response.responseSets[0].responses[0]["ScreenUpdate"])
 		{
 			if(widgetUpdate["widgetId"] == "Container@reuse_flowApplication@repeater_1292926459910")
@@ -225,8 +236,16 @@ class ApiClient
 
 	string getCardAvailable()
 	{
+		while(_busy)
+		{
+			sleep(10.msecs);
+		}
+
+		_busy = true;
+
 		auto clickImageEvent = createClickImageEvent("Container@reuse_Screen@img_card");
 
+
 		auto widgetEventsRequest = new WidgetEvents("Container", [clickImageEvent]);
 		sendRequest("sequential", widgetEventsRequest);
 
@@ -239,6 +258,8 @@ class ApiClient
 
 		goHome();
 
+		_busy = false;
+
 		foreach(widgetUpdate; response.responseSets[0].responses[0]["ScreenUpdate"])
 		{
 			if(widgetUpdate["widgetId"] == "Container@reuse_flowApplication@reuse_CreditCardCommonData@lbl_available_amount_value")