How my sim will be able in purchasing welcome back bundle

Hi Abubakar, customers who have not used data for 60 days and above and have spent more than 60 days on the MTN network are targeted for the Welcome back DATA OFFER. You can activate the bundle by dialing *131*65# and follow the response.
You can check if you are eligible for MTN Welcome Back Offer by dialing *559*65# on your mobile phone.

If you are not eligible for the Welcome back data offer, you can dial *121# and follow the response to access MTN Amazing data offers.

You can also activate any of their binge data plans.
The 1GB Binge, Cost N300, valid for 24 hours. Activation code: Text 155 to 131 or dial *131*155#. (For auto renewal Text R155 to 131, to opt out Text NO155 to 131).

The 2GB Binge, Cost N500, valid for 48 hours. Activation code: Text 154 to 131 or dial *131*154#. (For auto renewal Text R154 to 131, to opt out Text NO154 to 131).

Dialing *312*65*2*1# for purchasing welcome back bundle