I dont think Guneet's mom owes him anything. If Pammy wanted his house initially, Amber still wants her dead or wishes ill for her. Pammy's acceptable because she is civil to everyone except her own daughter and the man who triggers her bad. But Amber is bitter to everyone, berating every single one around him, starting from Kabir to Randeep to Nia's maasi.
I rather agree with silvermoonlight's points though than the topic opener's, only because there are certain clauses of Do's and Dont's from both parties in a Tenant and HouseOwner's scenario, and it's a common fact that after Amber Sharma made that 70+ conditions and signed those with Guneet, he has limited right on the rented property, almost amount to nothing till the contract is over. And Guneet's mom and Guneet got every right to arrange for roka in the ground floor, which was explained and mentioned well in the contract. Amber Sharma behaving like a child doesnt mean the tenants have to run out of the situation just like that. They have legal contract and agreement, why should Guneet and Pammy take the nonsense of someone anyways for something rightfully and legally theirs for the time being?
Pammy's biggest negative points are taking Guneet for granted and being old school. Then she is also selfish and insecure. But she is not even close to obnoxious Amber Sharma.