Need to ask the same question thrice in order to get the answer (ChatGPT-4 Azure AI)

Question

So I'm using ChatGPT-4 for deployment.

With the following settings:

• Deployment: ChatGPT-4
• QueryType: vectorSimpleHybrid
• Strictness: 1
• topNdocuments: 10
• Temperature: 0.8
• Top_P: 0.1
• Max_tokens: 2400
• Api_Version: 2023-12-01

So, this happens every single time. Even if I phrase it differently or in three different ways. I need to ask the question three times in order to get my answers.

It seems like it needs three times to get to the right source document. Even though I don't use that many source documents (4). But many of them mention something about this topic, so that might still be an issue.

What could I do to get the right answer in the first try?

A: Good day! How can I help you today?

Q: This customer is 55 years old and has been a member for some time, and his income is 3000 euros per month. What is his contribution rate?

A: I'm sorry, but the documents retrieved do not contain specific information about contribution rates based on age and income. It is recommended to check the rates on the <company> website 1. If the customer is a long-time member and has received a discount on his membership fee, he should note that these loyalty discounts will expire when the new rates come into effect 1. If the difference between the old amount and the new contribution is more than 2 euros, a discount of 40% will be applied on the difference until December 31, 2024.

Q: This customer is 55 years old and has been a member for some time, and his income is 3000 euros per month. What is his contribution rate?

A: I'm sorry, but the documents retrieved do not contain specific information about contribution rates based on age and income. It is recommended to check the rates on the <company> website 1. If the customer is a long-time member and has received a discount on his membership fee, he should note that these loyalty discounts will expire when the new rates come into effect 1. If the difference between the old amount and the new contribution is more than 2 euros, a discount of 40% on the difference will be applied until December 31, 2024 1.

Q: This customer is 55 years old and has been a member for some time, and his income is 3000 euros per month. What is his contribution rate?

A: According to the information in the retrieved documents, a customer aged 55 with a monthly gross income of 3000 euros falls into the category "Age 31 to state pension age". For this category, the contribution rate is €16.50 per month if the income is between €2,071 and €3,106. If the income is more than €3,106 per month, then the contribution rate is €20.50 per month 1. If this customer has been a member for a long time and has received a discount on his contribution, he should take into account that these loyalty discounts will expire when the new rates come into effect. But if the difference between the old amount and the new contribution is more than 2 euros, a discount of 40% on the difference will be applied until December 31, 2024.