Worst service provider

Furtrated and very ****ed ex customer of MTN, I took a contract with MTN, who was my service provider at that time June 2018, if am not mistaken. It was for P20 lite with router and I had to pay around +/- 350, I was happy for the new phone and router up till when dsv delivered the item and the router was not there which was part of the deal the very same day I alerted Granny mabalane ( who was the agent who assisted me when taking the contract) that I had received my package however to my surprise the router is not there. She never responded contact MTN where I was sent to pillar to post get someone to help and Granny didn't call me nor sent me any written correspondence, as I sent her an email to her personal work email that she used to send me all the necessary information and I sent her all the necessary documents. As per our conversation over the phone I had with Granny ( the MTN agent) I had 13 days to cancel the contract if was not happy with item, after making every effort to get respond from MTN no one contacted me with to how to get the router sent to me. On the 10th day after I had received the phone, I went to MTN ( the physical store )in Carlton centre to return the item as advised by one of the many agents from MTN to do so if I wanted to return the item as I was not happy with the service. from then went on with my life to my surprise MTN debited my account I reversed the charge and again the following month, then my phone was blocked still I called MTN to resolve the matter. I sent countless emails to Granny and Her manager Tiny with regards to the situation no one got back to me, I called a million times being transferred from one agent to the other just to get to Granny or Tiny still no response. being furtrated I went on to hello Peter just like am doing now to complain. I received a call from Rochelle who said she was head of complaints or she works in the complaints department at MTN who tried to find the situation, even Granny mabalane called to me to fix the situation after I had written review on hello Peter as am doing now. Still nothing happened as Rochelle promised to get the issue resolved and contract cancelled. I advised her and Granny too that I no longer had the phone with I sent it back if there is anything to pay for would be for the 2 months airtime that they provided then we are done, I also went to MTN in South gate mall where I spoke to a manage about the issue, he advised me not to pay anything to MTN up till the issue is resolved and he advised he would escalate the issue. Now three years later am getting calls that I owe MTN they sent me to lawyers to collect what I owe them, can MTN Rochelle or even Granny or Tiny call me to resolve these issue so I get on with my life, MTN is the worst company to get a contract from and I would not recommend them to my family, friends or anyone for that matter.