Comfort Level One Heating and Cooling Inc.

I paid Mahmoud 8000 in etransfer to install new furnace , air conditioner and tankless water heater. He kept asking for deposits and I would give it to him. He kept saying he is trying to book home assessment for rebate. It has been 7 weeks and he keeps telling me tomorrow of next week but never shows up. He is not answering my texts or calls. I borrowed the money from family as I am a single mother of 4 and also looking after my 95 yrs old mom who lives with me. He has taken 8000 and not answering calls or texts. Please I need to know what I can do.