Pen Point Review may sue MTN for sending offensive tweet to a customer on twitter if found guilty

Did MTN send offensive tweet to a customer on twitter?
Can you believe this? How can a company use such words on it's customer.
Firstly, for using such words on a loyal customer.
Secondly, for not rendering adequate services required to its customer.
Investigation still in progress
Sent from my BlackBerry® smartphone provided by Airtel Nigeria.