Double debited on credit card payments

HORRIBLE EXPERIENCE WITH FNB! I have been double debited by FNB for the monthly interest on my credit card facility and no one seems to be able to help me. I have spoken with the representatives on the FNB app who directed me to send an email. This was over a week ago. I have been calling everyday since then for feedback to the gold suite and to their credit card department , to date no one that I have spoken with can answer me. At this rate, I will be spending more money paying for the calls and being on hold for 20+ minutes a day than what is due to me.

I always had fantastic customer service from FNB but since I've downgraded from the Premier account to the Gold account, this has been the WORST CUSTOMER EXPERIENCE OF MY LIFE. It seems that the more expensive your account is, the better service your receive.

I JUST WANT MY MONEY BACK WHICH IS DUE TO ME. THIS IS *******.