Don't ever give them money in advance. I got an attendant for my dad. Requirement was a trained resource with experience of handling terminally ill patients, I got a fresher. I paid complete amount as an advance and they did not replace the person.
Unfortunately in 10 days tie my dad passed away and I asked for refund for the balance days to which the teams replied that they don't have a policy and had an audacity to ask for return of attendant.
Third class company.