Unable to get hold of customer care

I am finding it impossible to get hold of the cancelation department. I am wanting to cancel a contract that ended in May. A contract that I have not used for the last 18 month. I have being trying to phone for the last 3 days. At first I kept getting cut off as I get to speak to a consultant. Now the option is to speak to a Bot. But that does not work either. I am ferling very frustrated.