Poor service

I made a payment arrangement with DMC, and it was confirmed that I would only be paying an agreed amount starting at the end of this month. It was also confirmed that the current DebiCheck mandates — which were automatically loaded onto my TymeBank app by DMC without my consent — would be cancelled. I even received written confirmation of the new arrangement, yet it still hasn’t been updated. DMC continues to load their own DebiChecks for the 12th and 28th, despite knowing that I get paid on the last day of the month. Not only will these debit orders bounce, but I’ll also be charged unnecessary fees by my bank. This has become extremely frustrating, and despite several emails where I’ve been told the matter was escalated, nothing has been resolved. If this is not sorted out immediately, I will be closing my bank account and taking this matter further.