Apollo Cradle Moti Nagar — Blood test reports

Hi my self Supriya sharma I went to Apollo cradle for Quadruple marker blood test . This test is taken to assess the growth of baby in a womb and it is considered to be a very critical test.. I went there on 4 July 2020 .first of all they charge you huge amount of money they charged me INR 6600 for that test that is more than twice the amount that is charged from good pathology lab..Now I gave them my sample as per the sample I mentioned my LMP date was 18.02.2020 but they mentioned 17.02.2020 and calculated the wrong data..When I went there for knowing the same they made us wait for around 2 hours then guess what they blamed Apollo cradle Hyderabad for the blunder..when I asked them to return my report they told me they will give me the revised report on the basis o[censored]SG that I got them done there which I think was inaccurate..When we insisted them to give our original reports back they told us it was mistake from their part..Now I would like to know if these big hospitals are making huge blunders then why are they charging their patients alot is this how they should harass their patients.