poor customer service from MTN

I did my contract update on June 2018, P8 was coming with a free router with 500mb which was not delivered when they deliver the phone, I log a call with MTN and instead of giving me a free sim card they did a third contract without communicating with me, and now there is over-billing in my account and now when i try to resolve this issue with MTM im not getting any help. Another guy from MTN Durban says I must call Johannesburg from Durban branch which I’m not getting through and he said to me I must insist to speak to the supervisor or my query will never get resolved Im not getting any help from them, I try to send the below communication but no respond from them.

Good day

Kindly note that I’m still waiting for respond on the below request.

Regards

Ofhani Tshikoliso

From: Ofhani Tshikoliso Sent: 10/01/2019 9:14 AM To: 'Renall Chetty [ MTN South Africa ]' ********** ********** ********** 'Sphelele Shange [ MTN South Africa' ********** 'Nonzuzo Sefolo [ MTN South Africa' ********** 'Billie Jean Peters [ MTN South Africa' ********** 'Kagiso Monyatsi [ MTN South Africa' ********** Subject: RE: COMPLAINT

Good day

Since I have receive the router I am having an overbilling of 39 in my account which when I call MTN they say starting from months end their not going to bill that R39, when I ask about the one that they have already billed they say I have to go to MTN shop to speak to the manager for the upgrade that I did online and I have to go through ombudsman if I need to be credited. Please help.

Regards