Wesbank - Poor customer service

Good day. I have the problem of when applying for vehicle finance online, I get declined saying another Firstrand account has a returned debit that needs to be rectified . I only have one other account with them (Cashpower loan) and that account is up to date. I have send multiple emails and made many phone calls, still no one can come back to me or assist how to get the issue sorted. Really disappointing as I have been a customer for years.