Useless Homechoice with their ****py and buggy website - why can't I get my account removed?

I regret registering an account with Homechoice, during the registration process, it was easy for me capture my personal and contact information but now I can't even change my cell phone number or my address online, why would you even give an option to register an account if I can't update my information. I can't even get my contact number updated by their call Centre agents, they want me to provide Id documents, for what? Contact number is not even a FICA requirement. I just placed (and I regret do so) but I wanted my order to be delivered to a different address but I couldn't add the new address, their buggy website kept on throwing back an error message saying I must complete all the mandatory fields, why would you have an online platform if your developer fail to implement a simple validation? All I want now is to de-register because Homechoice cannot stop calling me but I can't is that even allowed? All they know is endless calls selling us products that we can't even buy due to their non-functional website. This is very disappointing I can't believe I am going through this again, in 2017/2018 I had the same issue where I couldn't change my address and we are now in 2022 the system still has bug. This is ridiculous.