cancellation issue

I received a call from a guy called Freddie who told me that he could help me reduce my debt by consolidating them. I told him I wanted to consult my mom cause I didn't quite understand what he was telling me. Told him to call me back in 5mins. But unfortunately I couldn't get hold of my mom so when he called me back I accepted the offer. & eventually when I managed to get hold of my mom she told me to cancell the contract & explained to me how it works & it's definitely not what I thought i was signing up for. So I wrote an email to Freddie asking him to please call me back after I spoke to his colleague who said she couldn’t help me and only Freddy could assist me & cancel my contract. But up to today he has not even bothered to responding to my emails and I sit on the line for minutes waiting to be assisted. The contract has not even started yet but I’m already having a difficult time with getting through to them