Very bad service

I took my car for cooling system(radiator) repair last week on tuesday and till today my car is not yet fixed and when i call, they said they will do follow up and promised me to call in no time, they didn't call me back,I called again and this time the lady took my contact number saying She will give to one of the guys to call me. Still now they didn't call. Bosch Car service Silverlakes service is very very very bad. I regret taking my car to them.