Hello. I can see that you're in need of a customer support agent and I would like to offer my services.
With 3 years of experience as customer support agent for eCommerce companies, my roles included those stated in the job description and I have worked with tools like Zendesk, Shopify, Slack, Excel, Canva, Wordpress, etc.
I have a high level of proficiency in both oral and written English.
How about a quick chat to discuss more about the job?. I look forward to working with you.
Best Regards.