Really poor service

The sales agents were fantastic. Quick with feedback and documentation. Their accounting side, on the other hand, was very aggressive when documentation and payment was required. We opted for the once-off purchase, instead of the monthly fee. Installation was delayed with several different excuses, but it got done. Our major issue is with the service levels since installation. Requesting and requesting assistance or techs to call back with no joy. Logged a problem on the 12th of Jan, received no calls, followed up a week later, still nothing. Finally decided today that enough is enough. Everyone should think twice before making use of their services.