MTN ***** ~ Account opened **********ly and now line keeps getting suspended

Additional 40Gig Data Line created on my elderly Father's Cellphone account on the 8th May ~ *****. Ref #***. The affidavit from the Police Station and information was submitted to MTN on the 10th May to cancel the ********** Data Contract opened. On the 10th June his Cellphone line was suspended, contacted MTN and the ***** case was escalated. Ref # 1-*****. Cellphone line unsuspended. 21st June ~ Cellphone line suspended again, contacted MTN and lady said an email will be sent to the ***** department. Ref # 1-***9**. Cellphone line unsuspended. How long does it take to sort an issue out without interrupting my Father's cellphone service!!!! 6 weeks now and no feedback!!! Surely MTN can trace which branch created the new account and who signed off on this new account. It seems as no one is ever held responsible and charges brought against ******* individuals.....