[USER (data scientist)]: Great! Can you give me the client IDs with multiple existing credits and high installment commitments? Please generate an Index object containing the indices of customers with multiple credits and high commitment.
My template of code snippet is:

---BEGIN CODE TEMPLATE---

import pandas as pd 
import pickle
 
# Load the dataset 
credit_customers = pd.read_csv("credit_customers.csv") 
 
# YOUR SOLUTION BEGIN:
<code1>
[COMPLETE YOUR CODE]
</code1>
# YOUR SOLUTION END

print(f"multiple_credits_high_commitment_idx: {multiple_credits_high_commitment_idx}") 

# save data
pickle.dump(multiple_credits_high_commitment_idx, open("./pred_result/multiple_credits_high_commitment_idx.pkl","wb"))

---END CODE TEMPLATE---

[YOU (AI assistant)]: No problem! Here's the code to get those client IDs:
'''
import pandas as pd 
import pickle
 
# Load the dataset 
credit_customers = pd.read_csv("credit_customers.csv") 
 
# YOUR SOLUTION BEGIN:
