Chubb bills for no security service delivered

2 Years ago we requested two installations, one at our home and one at our shop. The installation at our shop worked fine. The one at our house was never activated and the installation was never finished. Chubb billed us for both installations despite various attempts to get them to sort out the faulty installation at our home. We cancelled the debit order on our home as Chubb refused to fix the problem nor refund us on the money paid for a non functioning product. Now Chubb has cut all security services to us despite them receiving their monthly debit order on the shop and we are now without any security at our shop. On numerous occations Susan van Staden was phoned and she promised to sort out the problem to no avail.