Bored at work

I am getting a little bit bored at work.

I have been doing what i am doing for the past almost three years. Pre-sales, sales, after sales. Answering the same old questions by same old customers, why your product can't meet pour requirement; your product is too expensive; your company have logistic issue... bla bla bla. Questioning internal department the same old question Why shipment delay, when is the next availability date. Stress by management for some uncontrollable issues. Doesn't it sound boring? Anyway, these are the issues face by almost all sales personal, i am just one of them.

Sales industries should be dynamic; challenging; responsive; competitive. I am no longer feeling all these. I need a breakthrough; i need more responsibilities; i want to expand my job scopes.

Switching to a new environment could be a good option. Any other suggestion?