Appalling customer service from Easirent.

I have never left a review before (good or bad) but my experience with Easirent was so bad I had to. After experiencing an issue with my credit card I was forced to pay for added insurance that I didn't want, with no help or flexibility or suggestions from the counter staff at all, who was visibly delighted to be taking an extra £120 for a service I didn't need or want (despite me offering to pay the full £1600 deposit instead). Later, when trying to contact Easirent to confirm drop off / shuttle arrangements (on a Friday morning) no one answered any of the phone lines, despite multiple attempts throughout the day. On arriving at drop-off, we were told 'the driver hasn't turned up today, so you'll have to get yourself to the airport' - no hint of paying for the taxi, or even calling a taxi on our behalf. Genuinely the worst customer service of any kind I have ever received. I hope my experience was a one-off, but I somehow doubt it.