How can i change the merchant information such as URL, Contact Number, company name and bank account number

Please contact your account manager to request these changes or you can manage to do the changes from the Payhalal merchant portal ( https://merchant.payhalal.my/)

A) Change URL.

1. Login Merchant Portal

2. Click General >>> Developer Tools

B) Contact Number and bank account number  

1. Login Merchant Portal

2. Account Setting >>> My Account