Unfair treatment by Transunion

There is an MTN account which has been on my list since 2011, I have queried this account with MTN and submitted affidavits since I have never had an account with them. MTN responded positively after doing their investigations and comparing my signature with the account they have. on 15.03.2018 MTN sent a message to all the ITC ********** ********** ********** ********** ********** ********** to inform them about the status of this account and that it was **********ly opened thus it must be closed. Thereafter I lodged a query with Transunion, they asked me to send 5 signatures samples, affidavit and a proof of residence which I did but never heard from them for more than 2 months already. I resent my query once again but Transunion simply ignores it, since no acknowledgement of receipt was ever sent to me or at least a response to all the communication from my side.

When I try to followup my query by phone I get a message saying queries takes at lest 20 days to be resolved however, mine is for more than 2 months. What also surprises me is that when MTN sent them an update on this account my ID was included in the message but they still did not act on it. When I checked with MTN if the message was shared with TransUnion, MTN once again resent the message, which gives me an impression that Transunion is ignoring it.