Trending @Cognizant; Lost interest in working.

Actually it's been almost 4 years in cognizant. Haven't learned much. I spent 1 year on the bench, 2 as a buffer resource. Never been in client calls except in my first project, which lasted only 13 months. After that there's nothing I did because they didn't give any work even when i was eagerly interested in contributing. But i never got the opportunity. Now I have completely lost interest in this domain. I don't want to work anymore in this even if they assign any work. I forget everything that I have learnt these years. I have zero knowledge in everything. I know I can learn and easily adapt but I don't want to. So, I am thinking of learning something new. The problem is ,Last week i got my vdi access after 5 months, the thing with me is I don't want to attend calls or I don't want to work either. Till now they haven't assigned any work to me. So, please tell me if I have to reach them and ask for work or to join in client calls( I don't want to) or just stay invisible and start learning something new and switch. What do I have to do so that they don't give me any work. I'm mostly invisible to them. What to do to stay like that itself. I have zero knowledge and lost confidence to continue to work in the current domain. That's why I'm thinking of starting new. I think most people in grapevine are far more experienced than me so, please give suggestions or any advice that you think is the best or helps me. Thanks in advance.