Smerno service disgusting

so my spacebar on my MacBook wasnt working , I took it to Smerno Tablebay Mall , they fixed the keyboard , Only to find they installed the wrong keyboard . I no longer had a back light so contacted them again informing them of this , they weren't too bothered about it and told me to bring it back in . being a businessman I had difficulty finding time , eventually I was able to set aside an hour , contacted them to let them know I was on the way , when I got there I was informed the tech guy wasnt in . I told them I had contacted them why didnt they inform me ???? Oh they didnt bother reading the whatsapp , so I went there for nothing , no apology nothing . I am fuming at the lack of service . I am certainly taking this much further .