Ford poor service

My Ford Ranger 3.2 DC went in for noisy shutter relays in Dec 2018. Eastvaal then phoned me saying that the battery had a dead cell and that was the reason for the noisy relays. They replaced the battery and I had to pay R3500 for the new battery. I was then phoned and told that the Ranger is sorted out. After collecting the vehicle the relays were still noisy. Eastvaal then said that I need to take it back so that they can replace the noisy relays. I then started querying the battery replacement because the relays were still noisy after the battery replacement. After I took it back for the second time I asked them to show me the battery test results, that they said is on my job card. They said they will show this to me when I collect the vehicle again. On collecting the vehicle they couldn't show me the test result or my old battery. I have send more than 1 email stating that I think the battery was unnecessary replaced and would like a refund. Eastvaal just said that the noisy relays are sorted and they won't refund me. My relays again started with the noise on 2019/02/04. What will they say now???