Returns auto emails not working or being sent in Opencart

When using Open-cart and if a customer fills out the returns form for a refund we are not being sent a returns email to the admin. I need someone to set this up so we do receive an email when someone fills out a return form. We need this to email us immediately when someone has completed the returns form. at present, it isn't sending us any message and there is no area in the settings to allow this to happen so I believe it may need an automatic cronjob set-up. Also When people are subscribing to our mailing list the emails are not automatically being added to MailChimp - I have to go in and automatically add them myself. so ideally to have that sort would be good also. See attached mail settings image in Open-cart Please give me a price and timescales regards