Welcome to giffgaff and the community
Ideally it takes up to 24 hours for your number to be fully transferred (from the date you've selected to transfer your number weekends not included but are Normally much quicker ).
Here are some numbers for voice mail Which you may find helpful ⬇️
•To turn on your voicemail dial 1616
•To turn off your voicemail dial 1626
•To listen to your voicemail you dial 443
•To reset your voicemail PIN text RESET to 802443
You will need 8p credit or 1 minute from your goodybag
Click here for a full guide: ⬇️
How Do I Get Onto My Voicemail
also you can change the number of rings before the answer comes on by dialling
**61*443 10 enter the amount of seconds # followed by SEND. Enter the amount of time in increments of 5 seconds.
Also if abroad You need to call ##002#
that will cause voicemail to switch off
I hope this helps 👍🏻