Mdindia Healthcare Services — Reimbursement claim

The claim documents was asked to be submitted on mail which was submitted 5 days ago and the customer support executive doesn't have an update whether the mail is received or not. Being a senior citizen my dad doesn't have time and energy to call and ask everyday. The policy is of 10 years now and the service is extremely horrible. This is the first time we are applying for a claim and there is no way we are able to understand if the documents are atleast received or not.