What a poor show!

We rented a car from AVIS in Cape Town International between 02/04/2015 and 09/04/2015. My parents also rented a car for the same period, in the same group but at a different company and had not a single issue. I booked my vehicle with a car seat. On arrival, unlike all the other times at all the other companies I have rented car's with car seats at AVIS you have to install the cheapest, hardest car seat know to man yourself on arrival. You would think that a rental car company understands that after a flight you have some place other than the parking lot to be. I had to install a car seat while having to also load your luggage (I don't care about your policy or excuses, this is a waste of time and I could just as well have brought my own hassle free car seat). This brings me to my second point, a car said to be a group B car supposedly big enough for two suitcases turns out to be a Polo Vivo and only has a boot big enough for one standard 20kg suitcase. Then do you even do checks on you cars, my AC only blew out warm air and upon return I was just told thanks we will let the workshop know. Lastly please fix your telephone lines! Bad Bad Bad Bad Experience!!!