My sister passed on 4 weeks ago

My sister passed on 4 weeks ago. I app**** for a loan to bury my sister. They told me I qualify for 20000 however I must send them r2700 to increase my credit score. I told them I only have 600 I send the money now they say I must add in with 1000 while my sisters body can't be buried. Am very hurt and disappointed. I asked then to send my 600 back they say it will take few hours