Stressful pick up and drop off experience, car stank of stale smoke

The car stank of stale cigarette smoke, every time I opened the door to get in it made me feel sick. Always seem under staffed. Dropping off I had to queue for 20 minutes which was frustrating especially seeing as I had the full insurance so would have been better if I could have just dropped the key. I found it very odd that only a credit card could be used for the deposit and not a debit card, however if you were willing to pay more (i.e. for the full insurance) then they somehow found a magical way of letting you use debit card for the smaller deposit - sounds like a money making scheme to me which worked fro them here!