Best home and electric

After a whole complicated situation of my contract being accepted and then declined, I canceled the entire contract and now the debit orders are still going off, they have now taken nearly 2k from my account even after canceling, I am extremely unimpressed, when I want my refund they say they need cash on hand otherwise it will take months to get my money back, the debit order is still active so how much must I lose before I can actually cancel the contract ? Literally *****ing from me