Repent to Allah and you do not have to hasten to pay off the riba-based loan

I got married and lived in a small apartment for four years. When I was blessed with a child, we wanted to move to a bigger apartment, so I sold this apartment and used the price as a 50% down payment for a new apartment in a new suburb, and I wanted to pay off the rest of the price with the city, but suddenly I found out that the city’s system of accepting payments in instalments is very unfair, and they do not care that I have paid half of the price of the apartment, and they are going to charge interest on the full price, so I was forced to take a loan from the bank with riba. From that day I have been confused as to whether what I did comes under the heading of one who has no choice or not. If it was haram, should I sell my old car in order to pay off some of this loan by way of a partial expiation for what I have done, and try to buy another car by instalments so long as the instalments are halaal, as I have read? I adjure you by Allah to help me, because I am living in a country where the daar al-ifta’ regards most fiqhi issues as halaal too readily, and when I went to them they told me that this loan was permissible for me, but I know that it is haram.