Old Sytem Blocks my Application for a New Contract

Good day

I have been trying to endlessly for the past 2 months to apply for a new contract online, each tme the system declines as previous details on your old system still reflects allthough the account has been closed for many years, yesterday (Friday) an agent phoned me and advised me to go to my nearest MTN Store which is MTN Angelo Mall in Nigel, i got there and was advised to submit my 3 Months Bank Statements and Salary Slip, which i did, the agent at the MTN Shop attempted to do an application, then i was advised that the system is blocked with my details still on the old system and she cant capture my details onto the new system as it does not allow her to do so, now i am back to square one, what now ? The agent advised that she now has to log this with MTN so the old account can be removed and this will take 4 to 6 months ??? How is this possible ? It is rediculous how is this possible to wait 6 months for this to be attended to ? This is absurd, i was advised by the agent from MTN yesterday that an agent at the MTN shop WILL infact assisist and get it sorted now i am being told they cant and i will have to wait 4 to 6 months for this to be resolved, i am not happy, in the meantime i have been trying to get this resolved for almost 2 months already. Please can someone assist and have this issue sorted out ??