I can't really explain my worst ever experience with them, but still will try to mention some main disadvantages of them, so the upcoming people will know and will not do a mistake we have done;
1st; Please don't expect to received back the deposit you have given to them and even if you will receive, it would be only few dirhams,
2nd; They will very sweet to you when you will rent a car but actually they are the most unprofessional abusive staff, even they don't know how to talk to the customer in a polite way,
3rd; They will never answer your call and will block you when they will realize that you are calling or asking for your security deposit (Simple as top level scammers) .
4th; Whatever you will do exactly as per their instructions mentioned in the terms & conditions, but still they will do their best to do deduction from your security deposit.
5th; If you will connect to them through any way (specially to sales dept), they will never try to give you full information, like the office timing, office phone number etc) means the simple things, because they don't wanna talk to you, simply they don't wanna return your deposit.
Believe me! I really have much more to mention, but I hope this will help the people for not hiring any rent a car from them, and after reading this, still you are going to rent from them, then keep in your mind that "you are going to do a really big blunder".
Regards: Haider