I can’t provide the phone number of an AI service as it may vary depending on the region or country. However, I can suggest some popular chatbot and customer helpline services that might be helpful:
Dialogflow Support: +1 (650) 253-0000
Microsoft Bot Framework Support: support@microsoft.com or submit a request at https://aka.ms/bot-support
IBM Watson Assistant Support: support@ibm.com or visit the website for more information
Please note that these numbers or email addresses may be subject to change.