Cheap but functional car rental company - only use if you have lots of time

Extremely dissatisfied, severe mistreatment of customers. They claimed our car was too dirty to tolerate. If they say it's intolerable, does that make it so? We still had time before return, and we were willing to take the car for a wash, but they said once the car entered their store, it wouldn't be allowed out. We still had over an hour before the return time, but they wouldn't let us leave. The cleanliness standard was entirely up to them. I didn't think it was dirty, just had some sand and mud inside from our trip to the Scottish Highlands. Isn't that normal? They delayed our time to catch the flight, insisting we pay a £100 cleaning fee. I just want to ask, does cleaning need to cost £100? I will never choose this company again, very dissatisfied. Goodbye!

Slow

There were only three groups of customers ahead of me, but I waited for over 30 minutes. One was due to a computer error by the rental company that tried to add insurance to the customer's bill. The other two groups couldn't communicate well due to language barriers. Another reason was that selling insurance took a long time. By the time it was my turn, I had lost my patience and didn't check the terms carefully.

They just wanted money and I was scammed out of £119 with no way to complain.

On arrival was offered a GLA this is NOT an equivalent car or 'upgrade' as they later told me. I booked a V60 Estate or Similar, I expected something similar to this, there was no cars in their car park remotely close to this model. An upgrade was given but still not an estate and after a long discussion.