Hello Experts,
Which way is correct in writing as I'm confusing with the "Troubleshoot vs Troubleshooting"
a. "I'm so sorry to hear that you have an issue with the Microwave and want to say thank you for the troubleshooting you have done."
b. "I'm so sorry to hear that you have an issue with the Microwave and want to thank you for troubleshoot of the issue before you called me for help."
Thank you,