Incorrect personal details after Nashua Mobile

I used to be a Nashua Mobile client. My account and details were transferred to MTN. During this process Nashua Mobile or MTN got my information wrong. This included my ID number and home address. The other problem I have is I received a new credit card and needed to change my details as MTN doesn't have my correct banking details at the moment. During this process of trying to update my credit card details I failed all the security tests because of the admin problem between Nashua mobile and mtn.<br> <br> I have called the 808 number numerous times. Every time I fail the test and ask for a supervisor. I am then told the supervisor will phone me and this NEVER HAPPENS!!!!!!(That is if the 808 number doesn't just cut me off !!!!)<br> <br> I need them to lookup my information on the original forms I filled in when opening the contract and update accordingly, when all my information is updated phone me and I will provide my new credit card details.