Jai Shree Krishna
Monicaji, The following are my thoughts, which I hope clarify your query....
Ajamil was not a pushtijeev (The other story of Shree Thakorji not conversing with the Vaishnav refers to 84/252 varthas, that of Pushtimargiya Vaishnavs) and he attained Moksha, simply by utterning the name of Shree Thakorji. With this we understand and realise the devine power in the name of Shree Thakorji. The power of even prabhus naam is so much that mere naam smaran can give us Moksha.
In the second prasang highlighted by you.... It is important to understand, that we become a Vaishnav after the initiation by our Guru. And Shree Thakorji has promised to Shree Mahaprabhuji that all those who are given diksha of this mantra will become mine. Hence we see that in one of varthas of 84 vaishnavs, even when Shree Mahaprabhuji himself disowned is sevak, Shree Govardhandharan, still accepted the offering of Jalebis form the very same sevak, and when Shree Mahaprabhuji asked Shreenathji, Shreeji babwa told Shree Mahaprabhuji, you may disown him, but I have to keep my promise and will never disown him. Here in our relationship with Shree thakorji is because of our Gurudev. And Shree Thakorji, accpets us only due to the request by our Guru, and hence keeps his promise never ever to let go of the jeev.
Regarding the innumerable episodes were in we see that Shree Thakorji, for various reasons stops conversing with the Vaishnavs, we have to clearly understand that this no punishment but Prabhus krupaluta that he even in this is only moving us closer to him. Shree Thakorji is so krupalu that he never ever punishes us, but is always thinking of our well being only, and all his acts are only to help us in reaching him. To understand this, let us take the example of Damodar leela. When Ma yashoda tried to tie Shree Thakorji to the ukhal, the rope always fell short by two measures. These two measures are Ahanta and mamata. When finally Ma Yashoda is devoid of these two, Shree Thakorji readily allows himself to be tied to the ukhal.
Similarly, In the case of of the old lady Vaishnav, when scared by Cats fierce calls, Shree Thakorji tries to hug her and goes to sleep, and the Vaishnav thinks that Shree Thakorji being Poornapurushottam is still scared of a small cat, immidiately Thakorji leaves her and goes back to the Nij mandir and stops conversing and playing with the Vaishnav. In this case, Shree Thakorji inspite of being purnapurushottam, for the sukh of his baktha let her experience the baal leelas but when the Vaishnav percieved Prabhu as Poornaprurshottam, instead of the Baal swaroopa, Shree Thakorji immediately bacme exactly that and stopped giving sukh of the Baal swaroopa.
Similarly is the inicdent were in the Vaishnav thinks that Shree thakorji cannot even take care of his bed.
Also so in the case of the Vaishnav, who thanks the person for deviating the route of the road and saving her house, were in the Vaishnav says ... You have sved me.
And the most classic among them being the Raas leela incident, were in Shree Thakorji vanishes from the Raas, the moment the Gopis start feeling proud of the fact that they were playing Raas with Shree Thakorji.
In all of these incidents, Prabhu showers his anugraha on the Gopis, the Vaishnavs, bacause of their deenta, but when the very same deen bhaav is transformed into Aham or Mamtva, prabhu stops showering his Grace. But not to punish them, but only to let them be rid of these dual doshas, once and for all and attain Golok dhaam for his eternal seva. We should clealry understand here that it is prabhus krupa that he not only accepts us with our doshas, but also ensures that we be rid of them too, through his devine grace. Again an excellant highlight of his Virudhadharmashray swaroopa.
Hope my perception is right and please do correct me If I am wrong.
Shree Vallabha dheesh ki jai