I requested a change of bank details and I received an email from their support team member Vumile Msweli saying that she or he is closing the case due to no response but I never received an email from her

Hi there Sedzani. Please accept our apologies for the service you received. We appreciate your feedback and concerns and do not take these issues lightly.  We would like to turn this around for you and will be in contact with you to assist with resolving this as soon as possible.