Pathetic service from cancellations department

<p>After numerous attempts to terminate a fixed line due to poor availability of service in our area at the beginning of 2016, I continue to be charged for a service I don't use! I have been in-store, sent emails and phoned the call centre and each time I explain the problem from the beginning and each time I am told that the qury has been escalated (to where, I don't know because it seems there is no-one addressing queries passed through from the call centre). I have been handed over to debt collectors and notified them of the problem as well. This is affecting my credit record which is totally unacceptable. Today, I contacted the call centre AGAIN and they AGAIN told me it would be escalated. After requesting another contact point to take the matter further, they gave me the number of the legal department but surprise, the number doesn't ring! I don't seem to be the only person with this problem - does Senior Management not concern themselves with addressing customer complaints, especially the same problems that are reported continuously? </p>