Money stolen for a phone I don’t have

I keep getting charged for a cell phone that I never received. The phone was sent back to Comcast by whoever they use as a delivery person. My apartment complex would not receive it so it was sent back never received at first. I received a refund for $122 then all of a sudden I saw a charge on my account for 120 235 all these different charges and then the money was taken out of my bank account because I have automatic payment set up because of my Internet service with Comcast. I’ve called and spent at least 20 hours no exaggeration on the phone over the span of 30 to 31 days of texts I typed I spoke with the bot and agents. No one overseas has access to be able to correct whatever is wrong with my account.