Bad service & dishonesty

On the 1st of August i took my Samsung S5 for screen repairs(job number Q2SA004990) i was given a card to write my details but never was i told that i need an alternative contact number.The guy who assisted me told me that the phone will be ready in 7 working days for this reason i left my phone that Saturday.I passed by the store on wednesday to check the progress that's when i was told about emails that were sent on my email & they were waiting for my response on the quotation of the battery that i also left with the phone as it was giving me problems as well,i gave my sisters number *** whom i don't stay with.i called the store on Thursday i was given a number to call & check the progress of the phone myself the guy i spoke too told me the phone is in Cape Town for repairs & they don't know when will they get the parts the upsetting part is the inconvenience that i'm having right now because i don't have an alternative mobile device.i called my sister& she told me that she got a message today stating that they still don't have the parts of the meaning i need to wait for how long i don't know.i wouldn't have left the phone if i knew it will take this long.