Homestay Bnb Near Downtown Boston

I booked for myself but my family member decided to join last minute so I was looking for options to add a guest/cancel and rebook. I received an email at 4am before the check in day from the host stating the booking can be cancelled and refunded if responded within hours, to which I requested for cancellation and refund immediately that got both ignored and was not able to get refund even after messaging the host. The worst part is the host responding and accepted at first for refund but decided to ghost. The host dragged out the time to ensure refund was not available as well as declining refund after another request for cancellation and after our text exchange as below. I do not recommend such untrustworthy place/host for any future travellers. Me and my family hope for karma to return to those who aren’t pure in their actions in our society.