unhappy client

On the 30th of April I took my car for repairs. Later that day I was told that my car will be repaired the following week due to no spares. On the 6th of May was told that there were waiting for my insurance to authorize for repairs. On the 14th was told I will get my car on the 18th the latest and today I'm being told my car is not repaired yet because the mechanic is off sick, really what if he dies that means my car won't be fixed