I looked at sending it off for repair but though cheaper than a new bag by far I just couldn't afford, it which is why I asked if there was another way.
Ive patched things before and figured it wouldnt be too hard, but was just making matters worse. Definitely if I could afford it I'd go for a professional repair.
If it hasnt leaked, then it might just need a patch sewn. I used
LSR for something years ago, and they seemed fine, and will patch tears from £25. others seem more pricey, and you have to factor in shipping, but its not something you have to do instantly. There are of course a number of other places that do repairs, and even restuffing.
You dont need to wash it all that often, and if you are going to get it cleaned (and pretty much everyone recommends getting a down bag washed professionally, its just so much less of a faff), then get a proper repair at the same time, when you can afford it. As long as the tape holds for a while, its fine.