I rented a vehicle for 4 days and when I tried to extend by one day, they suddenly pushed thr price up by 400%. They only answer late and are vague in their response then refuse to take telephone calls but also do not follow up return emails. Some staff feed you far fetched stories about the vehicle being in demand therefore they escalate the price beyond what is reasonable (even though their yard is full of the same model) but then other staff tell you that it is a standard Head Office price, that it is the Head Office swindling you. The vehicle was dirty and the staff were not curteous. We are a London Listed Plc with lots of business that I will have my travel department divert to companies with more integrity. It will cost them far more than they extorted on this rental.