I would avoid the Glasgow branch of Easirent. They tried to charge me on top of my rental an additional £122 as the advice given by easirent customer services when i called to confirm i could hire without a credit card was wrong and apparently it was my fault. The so called Manager told me i was in the wrong for not contacting him directly rather than using the Central customer services number stated on all of their documents. Their attitude was horrendous and i felt victimised by the two staff working that day. After 10 minutes of their bully tactics to get me to pay the extra i refused and returned back to the airport without a car. Fortunately the staff at Sixt were pleasant and very clear with their pricing and managed at short notice to provide me with excellent service.