Misrepresentation and no customer service to resolve

Great service from MTN for customer of more than 20 years - no unfortunately not! Lodging first complaint on telephonic upgrade gone wrong on 30 March and as of today still unresolved notwithstanding various calls to 135 and emails to customer services and legal division – emails dated 30 and 31 March, 11, 12, 14, 17, 19 and 22 April. Apparently the 24 hours response time does not apply to me, blatantly ignored. Went to East Rand mall store and told to go to MTN Direct store. Travel all the way to the MTN ORT store in an attempt to resolve - shocking attitude from staff. Notwithstanding providing proof of all the communications already attempted, the only reply is - "can't help you, phone 135". I am truly disappointed.