FNB no customer service

Since beginning of October I have reported to debit transactions from my account, that let me in overdraft and no notification of the debits. It is foreign transactions that I have no idea for what it is for. I am abroad and only communication is via email. Well I have been sent from one to the next department. And as of today the 21st of November still no answer, still just try this department to assist. My mother went into the branch, new card was issued, but still with my mom in SA. I have changed my debit orders as I don't want to touch my account, to scared more debits will go off. If I had money in my account I could still understand, but I had a small balance that did not cover these debits. It was debit a week from each other and reference for the debits I don't know for what and all I could see it is foreign. All I ask that just somebody in FNB take responsibility and take ownership of the complaint and help me sort it out. 30 days dispute time is long gone due to FNB that sent me from pillar to post and no assistance. I am ashamed to call myself a FNB customer at the moment. Think it was big mistake to have moved my accounts to FNB.