Shocking Debit Order Collection with DebiCheck Mandate

I have been a client of this company since its inception as Safeguard 911 dating back to 2006. When it changed to The Unlimited everything went smoothly and without any issues. In June last year, my debit order was not collected due to a "System Upgrade". This happened again in September 2022, October 2022, January 2023, February 2023 and now again in March 2023. There are now 5 DebiCheck Mandates on my account and the issue is still not resolved. I asked the consultant whether I could pay the premium via EFT and was advised that this is not an option. Shortly after which the call was conveniently cut off.