REFUSAL TO UPGRADE!!!

Until now I have been a very Loyal Customer of Virgin Mobile who always pays his bills on time and has never been behind on payments for 5 or 6 years that I have been with them!! In this time they have assisted me to Upgrade Twice the most recent being May or June 2015 when I cancelled 2 of my Lines and they gave me 2 brand new lines of my choice with new phones.<br> <br> Now My number is up for its Upgrade but now I am not allowed to upgrade it to the Phone and Package that I want and CAN afford! Instead they suggest 2 other phones to me on packages that are lower than what I currently have and the phones they offer me are Downgrades from the 1 I currently have!<br> <br> They requested a specific letter that I should send to them to enable them to assist me in doing the upgrade and I did do this but still I can't upgrade! Also after waiting for a week or so I had to contact them on the progress of my upgrade status, they don't even come back to me on what is going on.<br> <br> I DO NOT want to downgrade to the other phones! I WANT THE PHONE AND PACKAGE THAT SUITS ME AND THAT I CAN AFFORD!!!<br> <br> Best thing to do and I will is to cancel this line and just go to Vodacom or Cell C!!!!<br>