Good day Nicola
Thank you for taking time to raise your concerns with MTN, please accept our apologies for any inconvenience caused as result of the breakdown in the service delivery in one of our touch points.
WhatsApp is a third-party application and therefore if you are moving your sim card to a new device you will need to follow the below steps to back up your information:
1. On the old device backup all your application and other important contacts etc to an email account or a cloud. 2. Then insert the sim card into the new device and use the restore options under settings. 3. WhatsApp Application also has its own backup option under settings on WhatsApp.
If the issue with getting you messages from WhatsApp back fails, then you can contact WhatsApp at
https://faq.whatsapp.com/ Rest assured, it is not our intention to displease you. We look forward to improving on the service delivery to you.
Warm Regards Roanne Juggannadh Complaints Management Team