Need advice on a sms contact and dialer app

so just got a new phone and used an app called "sms import/export" to export from my old thento my new but when j opened it on simple sms and tried to delete some message themessage gets deleted but after a while it comes back. tried wiping messgae but no avail. not sure which oneis at fault. i did try to also import from simple sms but no luck. when i opened the zombie messges it doesnt contain messages its just empty. anyone have solution to this?

any suggestion for a sms contact and dialer app and also import export of messages?