Vanquis Repayment Option Plan

I opened applied for a Vanquis credit card a few months ago, it was accepted and I got a phone call to confirm my details.

On the phone the advisor was very pushy trying to get my to use the repayment option plan, I kept saying no thank you and eventually told him I really didnt need it because I had more savings than the credit limit so if I had trouble I didnt envisage a problem. he said oh but then you wont have to use your savings, again i said no.

Then I noticed that these repayment fees were being debited from my account. I wrote and complained, they replied saying I must have agreed to it and no I could not not have my money back. They said the plan would be removed from my account.

I replied saying I was not happy with that as I am certain I refused this plan over and over. I have had no reply.

So now as well as still waiting for a reply about this I see they have taken more repayment option debits from my account even though they said they wouldnt.

I guess Financial ombudsmen is my next port of call, but what are my chances of getting the payments back and are Vanquis likely to be peeved and cancel my account?