Repair call out

On Wednesday 4th November I went to Samsung customer care centre in Germiston to ask them to come check a fault in my fridge,it was 16.35PM and they close at 16.30PM,I was given a contact number which I called on Thursday and made a booking for them to come and check my fridge,the call out amount is R430 which I agreed to.They booked me for Fri the 6th and was told I will get a call an hour before they arrive,at around 16.00PM I called them worried how come I haven't been contacted and was assured they will come the latest being 18.00PM but nobody showed up meaning I spent an entire weekend without a fridge.I feel this is totally unprofessional and unfair for them to promise and not deliver.