All-day waiting ... from 8 am to 7 pm but still no...

All-day waiting ... from 8 am to 7 pm but still no technician to be seen ..
Have called 3x with customer service, no madam we can not say what time the mechanic comes, you will be called half an hour in advance .. you are on the list of the mechanic. But yes, unfortunately, I do not have a telephone number from the mechanic and it looks like I have been waiting for the bad day for someone who really is not going to come! I am very curious what the customer service has to say tomorrow. I will hang on the phone at 8 o'clock tomorrow! At least I had expected a phone call, very disappointing this!