Double Tap Android runs both single and double tap

Take a look at code below. If I have one touch which registers 1 tap, it runs only the the do_single_tap function, which Is what I expect. But when I do a doubletap, it runs both parts of the code. After many hours struggling with this I am assuming:

The touch stays in the TouchPhase.Began state. Becasue it gets continually called by update, it will detect both tapCount==1 and then tapCount==2 etc, so both code segments run. If this is the case, how do we break out or set a flag to say that touch has been processed and do nothing more with it on the next update. Or does it change states whilst tapping ? Or am I over thinking it ? Confused !!!

 using UnityEngine;
 using System.Collections;
 
 public class monitortouches : MonoBehaviour {
     public float tapSpeed=0.5f;
     public GameObject e;
     float buttonCooler=0.5f;
     int touchCount;
     int doubletap=0;
     int singletap=0;
     int total_taps=0;
     int touches=0;
     private float dt=0.3f;
     // Use this for initialization
     void Start () {
         bool sm = Input.multiTouchEnabled;
         Debug.Log ("multitouch is " + sm);
     }
     
 
         
     // Update is called once per frame
     void Update () {
         touchCount = Input.touchCount;
         foreach (Touch touch in Input.touches) {
             TouchPhase p = touch.phase;
             touches++;
             if (p == TouchPhase.Began)
             {
               if (touch.tapCount == 2) 
               {
                 print ("double tap");
                 doubletap++;
               } else if (touch.tapCount == 1) {
                 do_single_tap ();    
             }
             }
         }
             
         Debug.Log ("you just had " + touches);
         touches = 0;
     
            
 
         Debug.Log ("toal taps: " + total_taps);
         Debug.Log ("single tpas "+singletap);
          Debug.Log ("double tpas "+doubletap);
 
     }
 
 
 
     void do_single_tap()
     {
         singletap++;
         RaycastHit hit;
         Ray ray=Camera.main.ScreenPointToRay(Input.mousePosition);
         if (Physics.Raycast(ray,out hit, 10000.0f))
             if (hit.transform.gameObject.name!="Plane")
         {
             //Instantiate (e,hit.transform.position,Quaternion.identity);
             Destroy (hit.transform.gameObject);
         }
 
 
     }