No Customer Care by MTN on quering Customers

I have been informed that query lodged in relation with the four references (***, ***, *** & ***) will be attended and resolved within 48 hours. I therefore expect a response by telephone and in writing by Friday, 4 March 2016. Failure to do so, will result in the reversal of the debit order done on 01 March 2015 of R 1257.48 (for both the cellphone numbers: *** and ***, under account no: A***) just as I did to the February's debit order of R 1057.99. Please note that the Cellphone no: *** was **********ly upgraded by \your so called third party, Summersun Mobile\". This was verified / confirmed by your ***** department too. The amount to be debited prior to that **********-upgrade was supposed to have been capped / kept at R 373.44 from June 2015 to 19 September 2015 (refer to invoices thereof), thereafter the amount should have been brought down to at least R 160.00 for the data bundle only. No issues regarding the other cellphone no: ***. The amount being debited is per the agreement to date. I have also cancelled cellphone no: *** (refer reference no: ***). Reply Urgently!!!"