Worst Customer Relation ever

I have been with 8ta since 2011,our relationship has been a great one,last month when my contract was about to expire one of their marketing team called me ragarding upgrade which i took,the phone arrived and i took it home for charging and left the box that came with it,ou cleaner unfortunatly took the box to bin,so i cannot remmeber the company name.after 3 days the phone sim was active i notice it was a new number with benefits ,i agreed with the company to keep my old number so what they did was to tell me am upgrading when infact selling me a new phone,if that was not enough telkom billed me exorbitantly on the old contract the reason when i called was my contract expired.i tried to engaging them on facebook since november and everyday am told they are working on it,i logged a case which i was told will be solved within 72 hours ,the duration has since passed when i call today am told it takes 9 days.the case number is ***0.i have been nothing but a loyal customer for the year never missed a payment,have other telkom contract and this is how am being paid ! i have even brought most of my family to telkom now they dont value us cause its difficult to come out of contract.