Black Friday data and minutes still outstanding

I have upgraded my contract over Black Friday weekend 2019,my upgrade included 10000 minutes and 50GB data as advertised hence my reason for upgrading over black Friday weekend, to date I have not received this black Friday minutes and data,I have sent numerous emails to customer services from December till current and I keep getting the same response " it has been escalated to billing department and will be resolved in 2-7 days" it's now February and my issue is nowhere near been resolved nobody at MTN can help all they do is pass the buck on ,its absolutely pathetic service ,its clear nobody in the billing department know what they are doing and I have had no compassion from MTN all they say Is we apologize, its come to a stage where apologizing isn't acceptable anymore I'm frustrated and would like to know what's my next step who in MTn cN I contact so somebody's are gets kicked and this issue gets resolved