Lack of bills and communication

Can anyone help please. I had a smart meter installed several months ago and since then have not had any bills. Neither is it picking up electricity readings. I contacted Bulb using the chat facility and the woman I spoke to assured me she’d get it sorted. She didn’t. I emailed them, no response. I emailed again, still nothing. I emailed the complaints department, again nothing. I messaged them using Messenger, nothing. I then rang on Wednesday and was told by the guy I spoke to that he’d escalate it and email me that afternoon. Guess what? No email. I’ve had it up to here with both the original issue and with the complete lack of customer service. I don’t know what else to do but I am strongly considering leaving, despite the green credentials, because it’s just not good enough. Help! Thank you.