Poor service and empty promises from management

Gave my watch in for repairs last month at Fossil Mall of Africa. The ETA on my slip says 29th May. I called to follow up after this date and was told that it should be ready the following week. After not getting a call I called again and spoke to the manager Joanna. She said it usually takes 6 weeks. I asked to please give me a follow up call the following week and she has not. Why do your slips have a ETA date if you cannot honor it nor have the common decency to give your customers a courtesy call even when you promise to? In my household we have 3 Fossil watches, a bag and wallet. Happy to say that I'll never buy another product due to your pathetic service. Please can this escalate to an area manager!