This has been a huge problem for me. I've always loved working with customers and dealing with real problems under pressure. So have enjoyed my time on support rota - but quickly L1 guys learn I'm better at support that other team members so everyone contacted me directly. The grumpy devs who pretend they dont know anything about the live system get interesting projects, no interruptions and a much better resume. I've learned to say no. Its also a good reason to move teams as you're not the super experienced guy who has to fix the urgent gnarly support issues.