Credit Card machine does not bank into my account

I have had a nedbank credit card machine installed in my shop Matrix Computers Sunninghill, I have been trading for over 3 weeks now and no transactions made through this device have banked yet. I called for assistance and I was told i need every slip and every settlement on hand or else there's a chance I will not get my money. This is the second time I am bringing this to their attention to be told I will be contacted back in 48 hours which never happens. I need to pay salaries and expenses and I cannot as my funds are held up in the device that is not banking. This is borderline theft and if not resolved ASAP I will ensure the media know about this as well. I have had nothing but shoddy pass the buck service from nedbank from the get go and I am now regretting using them for my business account and Ccard machines.