Itermise billing date on the statement it displays May instead of June

i requested my June itermised billing statement , which on numerous occasions when it was sent out the statement date displayed 11/05/2020 instead of 11/06/2020, two weeks passed no feedback email complaints at mtn about a week ago nothing , friday i called again a lady who was helpful Phindile assisted me to log a query Ref no : *** and it will be resolved in 24hrs , till to date no feedback , even when you request managers they promise you a call back nothing ...i am still waiting for Ndumiso Zikalala who was suppose to contact me on Tuesday 27 July 2020 after 12noon , the consultant i spoke to at 09:52 was Uzalise Mfeketwa, i spend more than two weeks trying to resolve this , the whole MTN cannot fix a date on the statement they issued , this service is appalling