Miway included an extra car on my account without

I have made an inquiry and quote on an extra car on my account over a month ago. The quote was given, and i asked to be given time to reconsider. The cover was loaded without my authorisation and I've been trying to get that to be reversed for more than a month without success. Every time I call, I'm asked to be called back in 3 days and it never happens. Meanwhile, the money is deducted without my authorisation. I want my money to be refunded for the extra car I never authorised.