No idea how to assist me and I have to fend for myself

I have a loan from capitec bank which I have been paying via debit order since 2013 and since February this year I have retired and have been trying to settle this account and eventually gave up around June now I don't have money going in at a constant rate and last month as expected debit order came and I didn't have enough money on my account and for a week now I have been going to capitec and 2 of them can't help.The first one told me we can't pick up any account in your name even loans,,,, and the second one i was told all my accounts are closed,,, now I'm feed up coz since I took it I have even gotten a statement,I don't know what is happening...the staff don't even make attempts to help or point me in the right direction