Lack in response

I enquired about reinstating my medical aid and received an application form two days later. I completed it and sent it together with the necessary documentation, but only received the usual default response "This e-mail serves to confirm that we have received and are attending to your email. Your query number is..."

How long do you take to respond properly to a client with regards to membership applications? How long must I wait before I know what's happening?? Surely there are more than just one person attending to these queries on a daily basis.

Maybe I should post on social media how ridiculous the service is and maybe even cancel membership rather, because I don't want to receive this service once I've joined?!