How to change Mobilink Infinity Broadband login details?

I think my Mobilink Infinity broadband login details have been hacked, so I would like to change the login details, but I am unable to do this. I have tried all the options and ways to change it but nothing seems to be working. Please guide me to how I can change my login details.

Either you should call customer service or sometimes there is an option to reset your password by entering in your login details or email address. I don't have Mobilink broadband so don't know exactly how to reset the password, but these two ways are a solution to your problem.