Employees' State Insurance Corporation [Esic] — esic dispensary (nand nagri east delhi) medicine not provided

Address:

Esic dispensary (Nand Nagari East Delhi)

I went dispensary on 22 apr'20 for taking medicine and they booked medicine and told come for taking medicine on 28 apr'20. When i went dispensary on 28 apr'20, they said again come after 4th may. When i went dispensary on 5th may they said to that medicine not getting in market and you have to take medicine yourself and you refund your money after submitting bill. I have done whatever they said. But, when i have submitted bill then they told me that you have to bring a company letterhead about your working period.
They have full rights of esic portal to check employee is working or not then why are they giving excuse in crises period.