I'm sure Forum staff can help get this sorted out but you need to be clear on what outcomes are needed to sort this out.
You say you want to cancel, if that's so then you've ample grounds to do so, stick to your guns for cancellation without penalty and refund of all incorrect sums taken, late payment surcharges. In addition you are reasonably entitled to compensation for (a) the incorrect contract, (b) poor customer service, (c) ineffectual complaint handling. And finally, if you've (reasonably) withheld payment VM will have marked your credit history with defaulted payments, so any settlement needs to include clearing up the credit history mess they have created.
Of course, if staff can't sort this out, then it'll be another trip to the industry complaints adjudicator, either Financial Services Ombudsman or CISAS, resulting in high case costs for VM, followed by the embarrassment of yet another case found in favour of the customer.