accounts update and giving them self time to investigate cases,

1 very bed services i lodged the dispute with one of my account wonga and they ignored my dispute until wonga update the account, however now there is debt collectors that listed me, when i log a dispute they telling me that their investigation is closed and they never investigate that debt collectors, 2. i also lodged the dispute with them for old mutual account that it has more than 18 month without update so for that the account must be removed or updated, as is closed, ive never refered to be prescribed but i needed updated as is closed or removed but they only rep**** to me with the feedback from oldmutual with voice note confirming tempting to make arangement of which that was fine ,but they didint update all of those accounts 3 of them shows still active, with more than 18 month no update, why not closed, ok,30,90, or 150, instead of null please i want all oldmutual account to be updated as closed. because all those accounts are closed from all south African credit ITC company , the only thing is not yet prescribed ,only on your site XDS is active, and am surprised because around march it was also showing closed what happen now. very BED services i am very disappointment with this credit company