Poor service

We recently opened a Business Account and also app**** for Blu Mobi device. The business account was opened successfully without a problem. The device was delivered two months later and it didn't work. After numerous calls and emails with countless complaints a consult was sent through with a new device (mind you even with the old device no formal training was provided). After receiving the new device it also didn't work I.e. it didn't allow for the customer to pay using a debit card. We are really frustrated and even thinking of switching banks. Our business name is J and P Catering, the consults that we were assigned are Karabo Ngwenya and Bongane Khoza. Right now our business account is being charged for a device we haven't even used, not even once. Can this please be sorted out urgently.