Worst service to no service from fnb

Good day to whom it my concern Fnb must have the worst service ever sent a mail regarding a dispute form that was filled in the 11 Feb 2020 they said the turn around time is 40 days... Still no reply on the mail, done a follow up the 20 March still no reply logged a complaint 23 March still no reply phoned several times to get it escalated still no feedback. The call centre are limited to access to get me all the info I request and feedback on ReferenceRd*** asked for a manager to assist also no feedback. Your slogan "How can we help you" need to be updated to "How can we waste your time...