Waited in for TWO days for response to my call

I took my car in for a service on 25 March and then again on the 14 April to have CV joint boot replaced. I noticed on 16 April that the service light was flashing. I phoned and was put through to the service manager who told me to bring my car back to have this reset. I told him that because of xenophobic attacks in the area I was too scared to come in. He said he would send someone out to reset the service light. Then on the 17 April the service light was still flashing but an oil warning light had come on as well. I phoned again (after waiting in for TWO days) and was told that Justin Wood would phone me back. I AM STILL WAITING for a response to both my calls!!!! I am a pensioner and look after my vehicle and am now too scared to drive it. After my Good Service Report on Hello Peter, I now am devastated to have to write and complain. What must I do to get Alpine Motors to respond?