Rude, loud, bad manners

Second complaint in 2 days, all in trying to explain compliance with pension fund section withdrawals with what seems to be aggressive staff who talk over you and then raise their voices despite being asked to calm down and allow for conversation. This is pathetic ive sent several emails no responses, i get a promised call back only to be screamed at which i will not tolerate. Kindly get a fund administrator to assist I am urgently expecting a call back. Failure to do so will result in escalation to relevant authority.