Appauling Service

I have been trying to cancel my contract since 2020 and call the cancellation department with the Agents promising to cancel and provide feedback on a refund for the amount they are deducting off a debit order. I cannot cancel the debit order as I have other contracts and pay a lump sum. Being a customer for over 17 years with so many contracts is very disappointing that I have to use this platform to get my issue resolved.