How will I get 4 digit code to transfer data to mtn number

Delta Airlines® is a leading travel booking platform in the Delta States1⇠⇢888⇠⇢272⇠⇢2145 or +1-(888)-272-2145 ‣ ⇢, helping travelers access exclusive discounts on flights...

Lufthansa Airlines® is a leading travel booking platform in the Delta States<<<<1⇠⇢844⇠⇢610⇠⇢0932>>> ‣ ⇢, helping travelers access exclusive discounts on flights, hotels, rental...

I basically bought a digital bundle through the app and when I transfered the money from my bank account, the mtn app refreshed

I brought a 12gb data plan to a wrong MTN number can I transfer back to another MTN number