No complaint about the car or value for money, but service at interrent leaves a lot to be desired

Booked the rental for 8 am pick up only to find the office was still closed. Found telephone number on internet as no telephone number, help or advice to be found at the rental cabin. Called interrent and was told in a very dismissive tone, I would just have to wait until the staff got their. Not a good first impression at all. When staff appeared (8:15) no apology or even acknowledgment that I had been waiting for the 8am collection. Was given an upgrade to a “Mitsubishi” which was actually a MG3. No complaint about the car or the value for money but the service leaves a lot to be desired.