INABILITY TO SECURE A CESSION CANCELLATION FROM ABSA BANK

I have a Momentum Insurance Policy through the Company which was ceded to ABSA in 2001. The Policy No ***. I have been trying for some weeks now to secure a Session Cancellation Letter through ABSA to cancel this Policy. My numerous calls to ABSA have proved unsuccessful as they advise they have nothing to do with a Momentum Policy, One of the Consultants Samke was indifferent and dismissive on the phone and eventually hung up one me. Sifiso another consultant at ABSA was polite and as helpful as he could be but insisted this Policy had nothing to do with ABSA and I must take it up with Momentum. Momentum refuse to cancel the Policy without this Cession letter which I cannot secure through ABSA. Due to the current Market the Surrender value of the Policy is dropping every day. I have tried to secure a line at ABSA that would deal purely with Ceded Policies from other Companies also without success. Help.