Unprofessional treatment from consultants

My telkom mobile data sim card has been deactivated without any explanations,when i called the centre i could not get assistance. According to the one consult out of million i spoke to confirmed it was incorrect billing ,then my sim was reactivated for the few hours then de-activated again.the staff is unwilling to help very rude to the core.the even refused to escalate my call nor allow me to speak to the team leader.i have requested a statement but no one seemed to know how to email me or explain as to cant they email it.