Dissapointed in FNB :-(

I am very dissapointed in FNB. I asked to have my Private Clients Cheque account to be downgraded to a normal Gold Cheque account because of my financial situation. After various phone calls, I finally received an email on 15 April 2019 confirming my downgrade. The person to whom I spoke told me that I would still be billed Private Client rates for the first half of the month, but thereafter it will be the normal Gold Cheque Account rates. I was also told that I could still use the black card untill it expires because it's only a card an will not affect my new account status. The rate for a Private Client account is R385 per month and a Gold Cheque account is R109. I was billed the full R385 for April and I am still paying R385 per month account fees. Why am I still paying R385??? I will let April go because it was in the middle of the month, but for the last two months I was only supposed to be billed R109 per month, not R385. Please can you attend to this matter and refund the money that was was not rightfully deducted from my account as my account is now in arrears.