PS4 hard drive drama

I bought a playstation 4 in August 2020 from Cash Crusaders Northcliff. It came with a 6 month warranty. By November it crashed, I took it back to them early December, and it was booked in for repairs. After an entire month of waiting, I had to call them to ask what is happening. They said they would follow up and get back to me. I still had to call them again!!! The manager said they might have to replace the 1 terabyte hard drive with 500G. I told him I want I paid for, I want the 1 terabyte. He said ok. This was the 1st week of January. I get a call couple of days later, the playstation is ready, they still replaced with 500G's!!! They said they will sort it out, AND I REQUESTED THAT THEY GIVE ME AN EXTERNAL HARD DRIVE TO THE SAME CAPACITY AND WE ARE SORTED, buts it 1 and a half months later, and I have heard nothing from them!! Just because I am a FEMALE ALONE, they think that they can take advantage of the situation and hope that I will forget. But I didn't. And if this situation is not sorted out by this week, I WILL BE TAKING LEGAL ACTION. I WANT FEEDBACK FROM CASH CRUSADERS NORTHCLIFF WITHIN 24HOURS.I WANT THE 500G STORAGE FROM THE PLAYSTATION 4.