Very bad service and untrusted

I stay at Belvedere mews . I was asked by resi that they want to do electrical compliance as I will be vacating the flat by end of September. They did that testing and after it electricity keep tripping at the house. I reported it and they came that time my fridge stopped working it got broken . The next thing stove didn’t work and they came fix it but they say they can’t fix my fridge. Now my second fridge is not working and they even refuse to talk to me and not answer my emails and texts. The treatment I am getting here is worse and very bed . This company still have my deposit with them