phone contract in repairs

i am so ****ing ****ed off with you *******s off with this ****ing mtn in cresta . iv being waiting up and down for the pass 3weeks waiting for my phone. i dropped my phone off on the 19 Feb 2016 and they said 10 working days. its almost a month that i''m waiting and i did not receive any contact from no body. my phone juts lost signal and its only 3 months old and now they tell me that the warranty plan is off what the ****. you guys are useless. when someone wants to take out a contract you guys are fast and know how to do your work. but as soon as there is a problem then no one can help you .i hope my **** gets sorted out today or ill take this to the ombudsmen.i was told by this African guy that works there he will call me back and he did nothing. then Sunday the 13/03/2016 i went back and spoke to Janele again and she also said she will call me back today the 14/03/2016 and still nothing. i am tired really and i would like to speak to the big bosses