MTN - Terrible experience

My son worked in America for 6 months on his return his cell phone was blocked. He went to MTN in Brits North West no joy to MTN Centurion Mall no joy and then to MTN Mall @ Reds in Centrurion ! I can not explain all the stories they have dished up! They told him to pay X amount fine he went to the bank in the Mall paid the amount and returned to the store with proof of payment. The Store "Manager" Raul took the proof and she he himself will forward this to the legal department dealing with reinstating the account and within 24 - 48 hours his number will be active. He paid the amount on the 14th of Jan 2019 almost one month ago. Me the Mother have being calling on a daily basis I have wasted almost a R1000 rand worth of airtime on this! Trust me every singe damn day I get different excuses from MTN, How on earth is this possible? Such a big corporate company that can not activate a cellphone number. In the mean time my Son had to buy a new phone with a new sim card. He can not upgrade before leaving for America or NOTHING because the line is blocked. He arrived in South Africa on the 12th of Dec 2018 he went to Brits and there after to Centurion Mall and Mall @ Reds this is ridiculous he is almost returning to America again. I spoke to - Winnie and Raul and Regan at Mall of Reds and to Jumit, Logan, Mphemi and many more! Who is going to assist us from MTN? Believe me I spoke to MANY on a day and 99% are incredibly RUDE. I called all over MTN and the Mall again this morning and told them if I do not get any form of answer today I will report them to Hello-peter!!!! He has a contract and can not use it. MTN is useless!!!!!!!!!!!