How to Learn French in a short time? (Paris)

Hi all,
I moved to Paris recently due to business. Although my business language is English, it is very difficult here to survive without any ability to speak French.
I am looking for French courses which is available out of usual working hours (after 5 pm on weekdays and full day on weekends) which will enable me to speak French in a short time.
BTW, this will not be reimbursed by company, so I am looking for affordable options :)

I will appreciate your help a lot!
Cheers,
Aslihan