Failure to respond to something they asked for

Went to life Dalview to book a bed . Was given all the paperwork by the receptionist and was advised that when i get my auth nr i need to email it to the email address listed on the paper. Sent my auth later that day to the email that was provided.. a week later still no response. Sent a follow up still nothing. Went onto the website to get alternative email address and forwarded all communication previously sent to the email address on website... another week later and another follow up still no response on ANY of the emails i have sent... its been 3 weeks now where they dont acknowledge the auth provided or any of the questions in the email. Must say its very concerning they cant send a simple response to an email and then you still have to rely on them to accurately deal with your claims/billing.