Excellent..at blatantly ignoring

I live overseas and have been contacting FNB email for MONTHS now and have sent probably more than 15+ emails to their general email address, as well as the email at my branch about closing my global account. They do not even bother responding. They will not close the account. I don't know WHO to contact to actually get them to action my response. The fact of the matter is...they ARE receiving my emails, as I get the automated response telling me they will get back to me in 24 hours. But they don't...so they are blatantly ignoring me. Worst service EVER!