Lack of service from Nedbank Business Banking

Called Nedbank Business re our card machine and lack of communication re new products and services as we planned on changing to a YOCO machine. No got back to us in 6 weeks. Called back yesterday and had to explain several times- no record of the call was recorded. Asked for a Manager to call us ASAP re why we have not heard back. Also asked for our Consultant to call back - nothing to date. Called back today as no feedback received - no call from a Manager explaining why this query has not been dealt it.