What is a service code - https://ttlc.intuit.com/turbotax-support/en-us/help-article/intuit-account-billing/service-code/L0Hw...
Where do you enter a service code - https://ttlc.intuit.com/turbotax-support/en-us/help-article/intuit-account-billing/enter-service-cod...
See this TurboTax support FAQ for contacting support - https://ttlc.intuit.com/turbotax-support/en-us/help-article/account-management/turbotax-phone-number...
