Uncapable to assits and Unprofessional!!!!

We have an account with African Bank and I`ve logged a Dispute regarding this dispute on 22 Jan 2015 and NO RESPONCE regarding this dispute and query been given. If you phone the collection department on *** the staff can`t assist you, they can`t give answers and the are unprofessional and rude. The laugh in your ear and put down the phone or put it on mute for about 20 min until you end the call!!!! I am very unhappy and upset in their assistance and no response and no answer policy!!!