Nasua PE - No response when trying to cancel contract!!!

If I could give Nashua PE a rating of less than one star I would. We have been trying to cancel our contract with them for months now. We have sent emails to various people in their departments including the Managing Director, with no response. We have spoken to people regarding this telephonically as well. We were told that we would receive an email but never did. In the meantime a debit order goes off on our account every month for printers we don't even use anymore as we have bought our own in the meantime due to poor customer service. This all started when our one department was left without a working printer on numerous occasions due to the fact that they said the usage did not justify a new toner. This was a very old printer supp**** by them, so not our problem if it drinks ink by the gallons. We were even willing to pay for a cartridge if they could just supply, as we were desperate to keep our department up and running. We are still waiting for said cartridge that was requested in October 2022. POINT BEING. WE WOULD JUST LIKE TO CONFIRM THE MONTHS LEFT ON OUR CONTRACT AND TO CANCEL SAID CONTRACT. IT IS NOT THAT DIFFICULT.