Ni assistance

I contacted netstar today (07/04/2022) at 15:15 to try change my address & do a unit test however I spoke to Mbali asked her to call me back & she agreed it’s been almost an hour & still no call back from her my wife sent a inbox via Facebook at 15:30 a agent by the initials ^SN asked for my details but my wife asked them to call me & no answer can I get called back to update my residential address & get a unit test done