how banks promote their locker system facility?

hi friends this is basha from india. i want to know more about how banks marketing their locker facilities. now i am pursuing mba. for analysing the case study given for me i need to know these details. please kindly help me to present my case study well. i hope a positive reply from you friends. thnk you very much.

SBI not allowing to withdraw the Fixed deposit taken for getting a locker?

I had opened a safe deposit locker with SBI. The bank asked me to open a fixed deposit of 50000 of any term to get the locker. Now when I want to withdraw the FD, the bank is saying that i need to continue my FD as long as it hold the locker. If I withdraw the FD, i need to surrender the locker as well. Is there any law/rule by RBI regarding this? Please help