Hisense ****** me

I had taken my U972 cellphone to Hisense SA in Woodmead for repairs, It had a cracked screen. They looked at (assessed ) it and concluded that it can not be repaired as there is no parts and part number for the required part to be ordered. They then said that they will charge (R 812) what would cost to repair it and I will have to take the cellphone to the store where I purchased it and the store will apply for credit with them and take the damage unit and give me new unit. I went three times to the store already in trying to get the phone exchanged. The store app**** for the credit with Hisense so that they could get credit note number to process the exchange of damaged unit with new unit. Only after my third visit to the store to follow up, that Hisense rep**** that the store needs to apply for credit with a certain cellular network company that supp**** the store with the unit, not with Hisense. I then decided that I no longer willing to waste any further time on this, and requested that Hisense refund me the money (R 812) I payed to them, and I will throw the damage unit away because they couldn't repair it. They still want the store and the cellular network company to be involved in getting the refund of money I paid to them. Hisense took the money without any repairs done , I want them to bring back my money.