So to Sum up:
- Priest didnt use words of absolution.
The words of absolution would be used in Confession, not during Mass. Do you mean the words of consecration? That would certainly be a problem, but you did say the priest consecrated the Eucharist and you received Communion, so I am thinking that is not it.
- The church didnt use catholic style hymns and used instruments like drums, tambourines etc.
That could be a cultural matter, and is not necessarily an abuse (though it might be, if the norms applying to that parish do not allow for it).
- The Priest as well as 15 other people of all ages, and genders were wearing exactly the same robes.
If they were truly exactly the same, that would be wrong, since the priest’s vestments are closely specified and other people should not be duplicating his “look” to avoid confusion.
- Those robes had Triquetra symbols on them.
That one makes perfect sense. You said the parish was called Holy Trinity, and the triquetra is an obvious symbol of the Trinity. Totally Catholic.
- People were dancing, twisting their bodies and clapping, + raising hands.
That would weird me out, as well, but that may just be the way things are done, either in that parish, that diocese, or that country/culture as a whole. You should investigate.
- The church was noisy from singing, during and after receiving communion.
That is unfortunate, and time for silence should be made.
- I was refused communion in the mouth.
Okay, that one is a definite abuse. Where more than one mode of reception is allowed, the choice is the parishioner’s, and the person giving Communion may not refuse based on that choice.
- People were asked to say the National anthem, just after receiving communion.
A bit weird, but could be another cultural thing. If you have any way of finding out what things are like at other parishes in the area, you can at least determine if this one is normal or strange by local standards.
- There was no proper altar in the church.
That one could be abusive or not; I’m not sure what the precise norms are. I know that modern altars tend to resemble tables, but the ones I’ve seen are still fairly solid masses of wood, not regular tables with legs. A priest can say Mass on the hood of a Jeep, as many military chaplains have demonstrated, but I’m sure there are rules about the composition of a proper church altar.
- Just a regular mass lasted 2 1/2 hours.
Unexpected for an OF Latin Rite liturgy (the Eastern liturgies are often quite long, I understand), but not abusive. If the parishioners enjoy spending a long time in worship, that should be commended.
- The priest used threatening body language.
Again, that would probably weird me out, but it could be a cultural thing. It sounds as though the parish has a heavy Charismatic/Pentecostal influence, so vigorous preaching and gesturing (the kind you more often see from TV preachers rather than Catholic priests in my country, the U.S.) might be an aspect of that.
To sum up, you encountered a couple of genuine abuses and a whole lot of culture shock. (Whether the culture in question is that of the entire country or just of that one parish has yet to be determined. Of course, since you can’t get to another parish, it won’t exactly help you to learn that your parish is “the weird one,” unless you plan to pursue this vigorously with the bishop.)
Usagi