HDFC Bank — change of relationship manager

I want to get my relationship manager changed. I am not happy with the service provided by my current manager.
I do not get any reply from the rm proactively, and have to call to remind her in case of any open query twice or thrice.
Many a times, when i call the number, it is not attended, and i get a call back 2 or 3 days later.

I had applied for a pl, and was told it will be processed. After several followups, i was told my pl application is rejected.

My previous rm was very good and prompt.