Poor,poor service

i logged a complaint via the MTN customer mailing addres they have available on the 29 April 2015.after no response i sent another mail on the 5th May 2015 as no one attended to my query.I took over a 1gig contract from my father,all relevant forms was filled in and handed in at my local MTN store.I recieved a message of the amount to be deducted from my account and noted that i have been charged 2x for a fee in takeing over my father's contract,i submitted this querie and a consultant eventually rep**** on the 7th May that my querie was submitted to their,MTN billing department and someone will get back to me.Today is the 13th May,nothing,no calls recieved from MTN,this again after i sent another mail requesting how long this take to sort out.To get a consultant to talk to on the phone is another mission in itself.I have been a loyal MTN subscriber for more than 15 years,but i guess at the end of the day we are all but a number to them