Incorrect billing

Hello Peter, I write this review to express my dismay at the appalling service I received from Rain. I have been incorrectly billed for data not used, the month for which they have just billed me had already been paid for. I have tried to contact their Call Centre but they refuse to acknowledge their error. This at a time when my infant child needs supplies the most. Kindly assist in me getting my R676.74 refund back