Supersonic - being stonewalled

Eventually cancelled my subscription with Supersonic. Gave my month notice, lived through it, paid my cancellation fee, and nothing. Subscription ended on 30 Sep 2020. Still waiting for them to release my line so that new ISP can take over. They do not answer emails - it's like talking to a brick wall. The consultant helping me, Katlego Swakamisa, probably the most unhelpful individual I have dealt with in my life. Can I please just get my B Ref number so that my new ISP can take over, or give me a valid explanation as to why it is not happening.