Bad,very bad , Samsung bad

I handed in my phone the 1st of September 2017 at Samsung care in Roodepoort. They charged me a fee and took the phone to repair. Then they came back and told me I had to pay more money to get it fixed. I went to the shop to pick up my phone, and was told that the shop was closed because of ***** investigation. Then I was called from another branch, to assist....and I am waiting. No answers and no phone.