MTN SA TYgervalley and Cape gate stores

I took out a contract through MTN and the phone came through. I set up a debit order to go through on the 25th of every month. I went to the Tygervalley upstairs store and they told me because I took my phone in the middle of the month they would debit me pro rata in the following month. I didn’t see a debit order on the 2nd month. I went to cape gate store to inform them I hadn’t been receiving any invoices or debit orders. I told them it had now been 3months and it addded up to more than R1000 which was actually more than I would have accumulated over the 3months They said they would investigate the amount and get back to me. No one got back at me to date. I have now found out I have been handed over to debt collectors This was an error on MTNs side and now I risk a default on my credit record.

I feel extremely disappointed and upset at the service I received and no one has been able to help me either from Tygervalley or Cape gate This impacts my credit score and has tarnished MTNs reputation and my trust in them I would not recommend MTN to anyone!!!!! Now I have to find a lump sum to pay off the debt collectors who also charge a debt collection fee. Pls could someone sort this out for me ASAP. I will be sharing this negative, disappointing and unprofessional experience on any and every social media platform until it has been resolved