Should I invite these relatives again after this frustrating experience?

and give them a chance or not anymore? I invited last week some relatives to come over to my house this coming Sunday for some coffee and mingle. I invited my uncle, his wife, my aunt and his son (from my dad side) , my cousin and his girlfriend (my uncle son), my sister and his husband. I invited them because my brother told me that from time to time it be nice to invite these relatives to our house as they always invited us to go to their house. Tehy invited us more to go to their house than us invite them to come to our house. The invitation was last week but I only had to confirm the time this week. Since there were going to be like 15 people I order some pastries to some an acquaitance who bake goods. Today I told everyone the time (5pm). My uncle told me he could at 5pm, my aunt was hesitant as for her it was kind of late for coffee so she was not convinced about the hour. My sister told me also it was late because she could not stay for along tme at the house that if it be earlier maybe she could stay longer.

My cousin girlfriend told me that she had a birthday of her own cousin so she could not (anyway she did tell me when I invited her for the first time last week, she was not sure anyway for this birthday, today she just confirmed me she could not). SInce everyone said it was late, I change to 4pm then. Again I contact my uncle and aunt to tell them about the change , I mean I contact them about the change just hours after I told them about the 5pm. When I told my uncle about it was 4pm he told me, "Ohh I dont know, I have a flu so Im not sure I let you know". I mean he told me he could come at 5pm 3 hrs earlier and then he told me that now he can't at 4pm because he is starting to have a flu, I mean hello? I question him how come and he responded me: "Well the flu started after I told you Yes the first time" . So I contact my aunt and told her the event was called off due for the reasons I stated.

Updates
13 d
My sister anyway told me that at 5pm she could not cause she had to go and visit her mother in law first at the nursing home early and have lunch with his fahter in law with her husband, visit us and leave early from my house. My brother say lets no organize anything anymore at the house, they all had became so sensitive and pure excuses, specially our aunt who she does not even have to drive, it is her son the one driving to our home.
Should I invite these relatives again after this frustrating experience?
Post Opinion