Not 'who' in specific, but a general thought. If i rephrase the question - is the language/dialect people use in daily life different from how they speak in TV/media?
Bangla is a very diverse language.. in case of Bangladesh, there are already dozens of dialects..
A few of the said dialects are so distinct that even a most seasoned speaker of standard Bengali ( shuddo Bangla {pure Bangla - standard formal dialect of Bangladesh}) will have a tough time making sense of what's been said.
From among these distinctive dialects a few are completely unintelligible and are as such sometimes argued to be separate languages in their own right. (Not a fan of the separate language theory.)
Here I'm referring to sylethi dialect from Sylhet and Chatga from Chittagong.. the later had its own Arabic based writing system that is now lost.
A very divergent form of Chatga is spoken in Rakhine state of Myanmar by the Rohingyas.
Coming to your question, yes, we do speak differently in real life.. but that depends on the person and how they go about it.
Some people by default speak shuddo Bangla as it is their dialect.. others while capable of speaking shuddo Bangla, use it only when outside on official business or when speaking to someone they don't know or with someone from outside their 'area' (because why would you speak standard Bengali to a person who speaks your dialect already).
My grasp of shuddo Bangla grammar for one isn't the greatest but it has never been a problem for me and the are millions of people like me in Bangladesh, who are not so great at speaking the standard dialect.
The dialect spoken in Kolkata is very different from standard Bengali of Bangladesh.. in fact it is a lot more gruff, if I may.
You could have people listen to samples of the two and ask people to pick which one sounded the smoothest, they'd always pick shuddo Bangla of Bangladesh.
The Bengali spoken in India is heavily influenced by Hindi.. On the streets most Bengali conversation in Bangla have atleast one Hindi word per sentence..
If you'd like to listen to the sample audios, give me a shout.