Horrible service

I had a cellphone contract with intellicell which i settled in December 2017,but they debited or billed me again in January 23,first of all our agreement was they should debit on the 25th but NO they decide to debit on 23rd fine,now I have been calling since that day for my refund till today I haven't receive it but instead when I call which i do everyday i get told mam we still processing it or mam lets send a reminder to the department, this people are ****** and *****s together with their staff.I don't owe them anything and i'm not prepared to even have another contract with them their service is horrible.All i want is them to refund me finish.I want nothing to do with this ****** ever in my life and im not recommending anyone to do business with them yessses.