Big no no for Sure Swipe

We as a Company have 7 Units with Sure Swipe. We struggle witj them since February 2020. We want to Cancell some off the units, and requested a Cancelation Fee, they mail one to us. Then Lock Down happen, early July we requested one again, what happen it is much higher as the first one, when we ask why they said they will investigate after many emails. Until today no one come back to us, we can mail not even a reply. The unit in Groblersdal, we struggle with it for 3 weeks, no joy if we call, yesterday we call again, lucky for us a lady help us an explain that this unit been inactive, due to the upgrade, so we are paying every month still for the rentals, minimum transaction fee, for a unit thats not working, and the upgrade is been done a long time ago. Sure Swipe is the first to take your money, but never there to help you.