Vijaya Diagnostic Centre — I am complaint regarding home services not at all good

Address:

Flat no G8 sapathagiri appartments phase 4 Padhamarao nagar Secunderabad

I am having approved credit form from CGHS for blood sample collection. When I called them they said to go first to nearest diagnostic centre and make bill first and give transaction number and they will send.
I went to musherabad branch but they said they will not make bill because the collection is tomorrow.
I want to know how old age people and patient will go to branch for billing.

It is simply like that first we have to book an order on amazon app and we have to go Amazon office and pay bill then delivery will come