Disgusting customer service

I was asked for a rating and I gave 1 star but actually mtn should receive nothing.I have never been this disappointed in any service provider as I am right now.They have left my issue unresolved, me angry and disheartened and literally just feeling sick.I ordered a phone online requesting that it be in a certain colour, because they had options.When i received the phone it was the incorrect colour.I immediately contacted them and informed the agent who falsely advised me to change it at any mtn store as long as the packaging remains intact.I did this and was told that the process to follow is to go to their main branches and not their franchise branch.I contact their main branch after many failed attempts because calls are not answered only to be told that I cant change ot in store I will need to bring the phone in and it will be sent away, resulting in me waiting about 2 weeks for another.After numerous attempts at trying to get through to the online division, I am told that thisncould actually take 5 weeks and that they might not even have the colour in stock.However, this information they are unable to provide me with on the phone I need to go to their main branch.I explain to the agent that I cant wait for their process of 4 weeks as I need the phone as my other is problematic and that there must be a systom in place to have this escalated, considering it was a fault from mtn side.Unfortunately I was left with an unresolved issue and asked her what other option do I have but to cancel the contract in the cooling off period.I cannot pay for a contract for the next 3 years and the device is incorrect.Besides that who wants to deal with a company that has no regard for their customers and are unable to provide satisfactory customer aervice.I am left with two options, pay for something I dont want due to time restraints or cancel.