The easiest thing is to call your carrier and/or go their website (carrier's) and disable the call forwading to Hullomail. That way your carrier voicemail system will resume answering the calls.
Here are the cancellation directions and codes for most US carriers. Hope this helps.
How do I go back to my carrier voicemail?
Whilst we add a "disable" function into our mobile app please follow these 3 steps:
1. Send an email from your registered email address to [email protected] with subject: TERMINATE
2. Uninstall the app.
3. Dial the following codes from your handset.
Alltel Wireless (CDMA) *710#
AT&T (GSM) ##004#
Centennial Wireless *740
Cingular (GSM) ##004#
Cricket Wireless *740
Metro PCS *73
T-Mobile (GSM) ##004#
Verizon (CDMA network) *73
Cellcom *680
Cincinnati Bell ##004#
Sprint Call Sprint 866-588-9907 and ask them to revert you back
US Cellular *740
I've had no problems with Hullomail and have been using it for a while now. I've even changed carrier and I just emailed these guys ([email protected]) and they couldn't have helped more...