Bad service costing me loads of money in travel

I returned a cell phone that stopped working after two weeks and was told it will take ten working days This has now been in excess of twenty-one days and still effected when asked to see the store manager I waited for 15 mins and he did not show up his smoke break was more important Hifi corp have a policy that should the repair take longer than twenty-one days they replace the unit this is not happening Festival shopping ctr. in Kempton park they have also never rep**** to my emails to them