Secondary Sim not working, no green S6 EDGE

Good day, i have been in the past 3 weeks unable to resolve any issues. Firstly, my secondary sim has not been working for alomst a month since my whole upgrade cancellation issue occurred. No one can assist me! I need this working immediately. Secondly, no one at mtn is willing to put on the effort to order me an emerald green s6 edge. I am a long standing client with 2 contracts and mtn cannot make a plan with samsung to arrange a green s6 edge? Vodacom had all the colours, including the new blue????? Why should i pay so much money for a white or black?? Thirdly, this is my 3rd hellopeter that the upgrade charge has not been reversed as yet? ?? Please can someone at mtn take ownership and resomve my issues. Both my contracts are expiring in august, where i was planning to renew both, i am possible cancelling both.