PATHETIC CUSTOMER SERVICE

Since january this year my blackberry z has been giving me the same problem and it has been in and out of repairs.it just said EMERGENCY CALLS ONLY so i took it to Cellc Gateway and it was booked for repairs, this was in January and it came back and after a week or 2 it would give me the same problem again and i kept sending it back.In September 5 i took it to Gateway and i was told i will recieve it within 21 working days.Today is the 13/10/2015 and my phone is not back.2 weeks i got an sms ststing it has been booked at Blackberry for an as*****t, I called and i was told it will take abt 5 days there, i called on the 7th day and was told there was a problem someone will get back to me.I then recieved an sms after 3 days stating my phone was recieved from blackberry so from there i was hoping i will get an sms saying i should come and pick my phone from Gateway.no one bother to tell me why it was taking so long so i had to call and was told its still waiting to be taken for testing.on my last booking i requested for cellc to change the handset because it really had a problem but no one attended to that and currently i am sitting witout a phone and i wsnt even given a loan phone-