Treated unfairly

I visited the Mtn branch in Chatsworth over the weekend to apply for a new cellphone contract, I was denied access to the contract and named a high risk customer with no reasonable explanation which I find very insulting and unprofessional. I then visited 3 other cellphone branches to find out if I would be insulted like I had been at the Empty N branch but to my surprise my applications for a contract were approved at all 3 stores.<br> <br> My biggest disappointment is that I have existing accounts which are all up to date if there's need to check my credit history, I am employed on a permanent basis with a salary every month and I am a current customer with Mtn who has no debts but you still refuse me a simple contract which I can afford and instead you want me to create more accounts which will end up leading me into debt and then you will approve my contract ???<br> <br> I have sent you emails and have tried contacting you guys since Saturday to no avail. Please respond to me as soon as possible