My MIL and FIL skimping out on my engagement lehenga and other shady behaviours

So I am a 29Y woman, getting married soon to a guy I am in a relationship with 8 years. My fiance communicated with his parents beforehand that they won't ask for any "gifts" and they agreed. My family (being ladkiwale) called them to say that we are going to gift you XYZ (incl MIL jeweley, sarees etc). My MIL didnt say no and happily agreed. Then my family asked to gift me one lehenga. In our family we have the tradition of the bride getting her engagement lehenga from the in-laws (not the wedding one, like most of families). She called me up disgruntled, saying that they don't have such traditions, yet cuz my family asked for it, they'll get it. I selected one lehenga and they ignored that and started sending dirt cheap options (mind you, they are comfortably wealthy). I felt humiliated again and again. Frustrated I called my MIL to say that I'll buy my own lehenga. My FIL in response said they have a tight budget and will send me the money in a lifafa, and the rest I can chip in. Now I have bought the lehenga myself, communicated it to them and they are not paying even a dime. My fiance had earlier told me they have a history of taking major chunk of their kids salaries (despite them earning 6x of their children salaries.) This is shady miserable behavior. On top of that, when I share this with my partner he becomes defensive and has started blaming me for being an overthinker, money-minded etc. He even said that MY FAMILY shouldn't have offered them gifts. It's my family's fault, not his family to accept them. What do I do?