Am I owed some kind of back pay?

Hi I inquired about being a caregiver for my disabled father in July of 2019. They accepted and a worker came out the beginning of October 2019 to evaluate my dad. He was then approved and we were supposed to start receiving money that following month. We did not receive anything for November 2019 December 2019 or January 2020.. we received a payment finally in February 2020 and then nothing else in March, April, May, June, July, August, or September of 2020..Now all of a sudden a new worker has contacted me stating our old worker had retired and she was our new worker🤔 I'm thinking huh? No explanation or anything as to why I have been taking care of my dad out of my pocket nothing just, I'm your new worker and go on there and complete the logs...which by the way only go from October 22, 2020 Until Today November 9, 2020. So I'm confused am I owed money.? And if so who do I contact or what do I do? Please help I feel like this was totally unfair to me. Thank u in advance