i have go through this kind of incident in Gampaha arogya too.
when my bro got sick, took him to above hospital, there was a lady (young) doctor. she gave a tablet to slow down hear beat of my bro. then he collapse and fall a sleep on the chair. we ask her should we carry him to bed. she said no. but later my bro woke up. the didn't know what happened to him. then i realise her face become red and showed something wrong. finally she wrote a letter and asked us to admit him to general hospital in gamapaha.
when we admit him to hospital i told what happened. then they start to smile. i asked why do you smile. then the doctor said that tablet should give while patient is on the bed. finally he had nothing serious. discharged within few hours.
since then we don't go to arogya anymore.
these are good examples for us to avoid those stupid hospitals.
but i feel very abt your dad bro.
RIP.