Unity Newbie: Buttons won't switch scenes

Hey sorry I am a Unity Newbie, but I am stuck. The buttons won’t switch to the scenes, the buttons work and the code shows no errors. Someone recommended looking at the build settings, all my scenes are selected, so I am really lost. Please Help!

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.UI;
using UnityEngine.SceneManagement;
using UnityEngine.EventSystems;

public class ChangeScene : MonoBehaviour {

	// Use this for initialization
	/*void Start () {
		
	}
	
	// Update is called once per frame
	void Update () {
		
	}*/
    //detects which button is clicked
    public void detectClick()
    {
        //get the name of the current clicked object
        var theObject = EventSystem.current.currentSelectedGameObject;

        //take action depending on which object is clicked
        switch (theObject.name)
        {
            case "Microwave":
                Debug.Log(theObject.name);
                SceneManager.LoadScene("Coming_Soon");
                break;

            case "RiceCooker":
                Debug.Log(theObject.name);
                SceneManager.LoadScene("Coming_Soon");
                break;

            case "Stove":
                Debug.Log(theObject.name);
                SceneManager.LoadScene("Stove_Style");
                break;

            case "S_African":
                Debug.Log(theObject.name);
                SceneManager.LoadScene("Coming_Soon");
                break;

            case "S_Eastern":
                Debug.Log(theObject.name);
                SceneManager.LoadScene("Coming_Soon");
                break;

            case "S_MiddleEastern":
                Debug.Log(theObject.name);
                SceneManager.LoadScene("Coming_Soon");
                break;
        }
    }
}

Hello im a bit puzzled by the function detectClick, who calls it? i made a small sample with a cube and a collider listening in OnMouseDown() and replacing theObject.name with gameObject.name but the rest remain the same and it works, my guess is that your method detectClick is never called.