I reply to all emails sent to me. Probably you have your spam filter for your email processor set too high and my reply(s) got sent to your spam folder. Nothing at all I can do about that.
FYI, member name changes are only permitted for contributing members. It appears you are not, so the best I can do is to merge this new account into your old one returning you to your previous member name.
If you do not still have access to your old account (RandR), please let me know ASAP before I do the merge which will delete this new account. Private message please, in case we have to discuss a password change.