I have spent the better part of a year trying to get FNB to respond to my emails and calls

I have spent the better part of a year trying to get FNB to respond to my emails and calls. They appointed 6 different debt collectors for the same account. In good faith I paid everyone appoint led to collect. Now FNB can't give me a recon or statements of account, and the amounts they claimed in the body of an email are double what the EDCs have on file. I logged a complaint here previously and Lusiba of FNB client services made contact. She requested all the emails and POPs dating back to account inception. I sent this to her and followed up at least 15 times. Yet she's not responding but most of my emails have read receipts. When she originally contacted me, she assured me that all EDCs will be removed, FNB will enter into a suitable payment agreement once they have reconciled the account. Today a section 129 was issued against me.