Weak bullet
"Responsible for customer communication and project support."
Decision support for stronger applications
Examples
Most resume improvements are not about inventing better achievements. They are about describing real work more specifically and more usefully.
"Responsible for customer communication and project support."
"Coordinated client updates and project handoffs across 12 active accounts, reducing missed follow-ups during delivery."
Specific scope, clearer action, and a more credible signal of value.