MTN IS A MESS

I have had a contract with MTN for 18 months now and i have had an invoice issue for the whole period. They keep saying I should send the contract upon receiving it nothing is done.

These are the people i delt with,

NQOBILE NKOMO TERRY MORAKE NEO MALOKA FORTUNATE PHAKATHI OLETTA SAMUEL PALESA GUGUSHE PHILANI NDWANDWE ZANELE SHEZI NOMPUMELELO NYAWO BUYISELO GULUBELA NOSIPHO SHANDU