Airtel — Regarding Airtel Broadband Connection

At first i got 2 mbps connection at my home of airtel broadband then a airtel sales guy came attending to my complaint and he offered me to provide 16mbps airtel broadband speed only when i take new connection which comes with unlimited data, the promise he made. He also told me that he would discontinue my old connection and that too in 7 days. He meant that 7 days will be charged too i even agreed to that since there is no airtel customer care support to help us, i thought everything was fine until i saw my new plan on airtel thanks app which was limited to just 75gb per month soon i realized that the sales guy fooled me to get new connection and also its been 6 days since i told him to disconnect my old connection still there is no update on that too (Note - i am still billed for old connection too) because of that sales guy i have now 2 connection in my house he didn't cancelled my old connection neither i am getting unlimited data on my new connection there is no support no help from airtel side just local airtel executives who are fooling customers. Today i again complained about my old connection and new engineer was assigned to my complaint he told me that sale guy fooled you which he shouldn't have done and also you can only cancel your connection when airtel 121 customer support starts after lockdown, in every situation i the one who is suffering just because of that sales guy. I don't have enough money to pay 2 airtel bills until lock down. Therefore please help me with this situation asap.

Old airtel landline number : - [protected]
New airtel landline number :- [protected]

Thanking you