lack of good costumer service

Bought a phone at Ackermans with all receipts and proof and immediately noticed the phone had some issue with connectivity, battery, freezing. took it back to them ASAP stating the fault it has but the service i received was mesmerizing as in the manager was just confused and didn't even know what to do. the he told me to come back in 21days which i did. But when I got there, it wasn't even the manager who attended to me which is perfectly alright. but the lady who attended to was throwing silly moods and careless in all. she doesn't care take the time to carefully check on the system and then without any manner of approach, she heaped it on me that my phone been had collected without even check it out the storerooms i felt so offended by that.. then i told her to go check in the store which did and then after 21 days still my phone is not available. this has inconvenienced so many things i had going. so i decided to write to hello Peter