Didn't get my prize from 94.7 Radio Station

Won a competition 947: DISCOVERY INSURE W/C 17/02 on 19 February 2020. Have been waiting to get my prize from 947 and have sent several emails and made various phone calls, but they just don't get back to me. Every time I phone, I just have to tell the story again, but still no feedback! Actually feel sad as I was a very big fan of them. Surely one must be able to escalate this?

I will post an update here after 19th March 2020 (whole month later) to let everyone know if I'm still waiting or received the prize.