Bridge of contractual obligation

I signed a 24 months contract for a decoder. When the contract lapsed, the company automatically subscribed me to a technical support, which they started deducting my account for, despite the contract clearly stating that a customer has to consent to the technical support once the contract has lapsed.

I contacted the company several times to cancel the continued debit orders, which can go undetected because it's not an alarming amount that banks concern itself to alert customers of, but the debit order continues unabated. Can OnAir TV honour its own contractual obligations for its reputation sake!