no service

We are trying to settle my brothers account since last year. We have sent various mails but nobody seems to be willing to help. The lady that assist me with my account forward my mails to a person Mareece, he/she gave me a number to contact we have tried numerous times to contact this number but its engaged the whole time. We have been struggling to get assistance on this query and no one is helping we want to settle this account asap as we are trying to invest in a property and we are getting nowhere.