On updating phone number and redeployment causes an error

On updating phone number of an account and redeploy leading to error.

Steps to reproduce

Step 1: Create an account.
Step 2: Edit the phone number and redeploy.
Step 3: Check database and adwords.

Snippet of the log

2013-07-12 08:18:07.499 (3) [pool-5-thread-8]: Mutating Mobile Extension: Operation=Update[CampaignIdentifier=132025025,ClientId=6530880104,Country Code=GB,Phone Number=07576511002]
2013-07-12 08:18:08.114 (1) [pool-5-thread-8]: Error while creating Mobile Extension for Campaign Id: 1006623
2013-07-12 08:18:08.114 (2) [pool-5-thread-8]: Unknown / unexpected exception [com.thesearchagency.adextension.exception.CampaignAdExtensionException]. msg=Error while removing Campaign AdExtensions
2013-07-12 08:18:08.114 (1) [pool-5-thread-8]: Exception [unhandled exception]:com.thesearchagency.adextension.exception.CampaignAdExtensionException: Error while removing Campaign AdExtensions
at com.thesearchagency.adextension.GoogleCampaignAdExtension.removeCampaignAdExtensions(GoogleCampaignAdExtension.java:283)
at com.thesearchagency.adextension.GoogleCampaignAdExtension.updateCampaignAdExtensions(GoogleCampaignAdExtension.java:321)
at com.thesearchagency.adextension.GoogleCampaignAdExtension.updateCampaignAdExtension(GoogleCampaignAdExtension.java:307)
at com.thesearchagency.adextension.GoogleCampaignAdExtension.updateCampaignAdExtension(GoogleCampaignAdExtension.java:33)
at com.thesearchagency.admaxlistener.worker.GoogleAccountWorker.createMobileAdExtension(GoogleAccountWorker.java:744)

Actual result : Throws unhandled exception and removes entries from adwords.

Expected Result : Should update the phone number in database and adwords.