Loyal customer sick of FNB

These people are harassing me for my connect balance of 495 which has not been paid whilst they have made a mess with my loan repayment and still owe me with having excuses everytime that they paid back what they needed to which is not the case ....I have been in contact with them for months and decided to drop it as they do not come to a conclusion now they are putting Gl attorney after me for a 495 whilst they owe me more than 1000 pathetic. I have banked with FNB for long already and never had a problem until then . I have had ptsd and they stole from me this is not on