anyone received calls from 03-58703878 from agent that asked you to upgrade your unifi to pay nothing promotion and extend the contract to 24 months?

Termination procedures:
For termination  , you need to give 30 days notice termination and you can put notice in unifi.com.my by log in to unifi portal at unifi.com.my
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Within that 14 days from you put notice, you need to clear all the outstanding
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On Day 31-37 owner need to walk in to return the modem
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If you did not return the modem, there will have penalty charges RM 500
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The account will be terminated within day 28-30 automatically
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There will be penalty if terminate within contract

Why so mafan?
Now my pay nothing promotion order is not in their system and their TM CS told me I can't cancel because I have agreed on the phone to let them upgrade (the phone number above which TM claimed it is not from them)