MTN NO RESPONDS

On 21 April 2021, I telephonically upgraded (sim only) *** and *** (*** and 1-***) I was promised that someone will call me regarding the delivery of the sim cards. It is now more than an month later and it did not happen yet? I was also told by the operator (how called me) that I can apply for a 24 month device only contract. It seems to me it was a lie. Now I have 2 sim only contracts for 24 months and 2 old devices?

I did e-mailed MTN Customercare and received an reference: #***. That's where it stopped. I did send follow-up e-mails but no word from MTN??