Pathetic service

I took a contract with this company in 2019. They delivered an iPhone that was not functional and had sent it back to them. I have never received the phone back and I called them more 20 times which later was transferred to a guy named James. James promised to speed up the process ,so that I can get the phone back. I never got that phone back and the contract is ending on the month end. They are the first ones to debit my account comes month end.