No agency to assist clients finance department is undermining me at this point

I have logged a complaint on the 4/08/2025 my complain was about June debit that was debited but Capfin is failing to allocate on my account because of African bank never sent their payment confirmation which is something that has nothing to do with me as a client, on top of this no one I can call or check the progress to call centre they push me to collections and collections they are not assisting besides harassing me for non payment, Gloria called me after my complaint did a follow up call for 3 days no positive feedback I sent them statements as per their request still to date no response no action from finance department I’m not sure if im being ****med or undermined by this company, my name has a missed June payment on Credit score while it was debited I’m not sure which measures I should take to be heard by Capfin company