eye condition

I am a customer-service agent who does his job very well, but every day I still get difficult calls. I get customers who yell and demand things constantly and we get surveyed, and if we get a bad survey, it's always our fault....I feel like my job is always in jeopardy because of it and get massive anxiety that I developed an eye condition from stress called central serous retinopathy.

It's many interactions, not just one. What would help us if they took the end-of-call surveys out completely. I don't want to feel nervous about customers giving me bad reviews just because they don't get what they want.