Andythetree

Hi, new here, so I have read through tons of posts, but none seem to cover my problem. I have a 2004 Grand Voyager diesel. I have had strange moans and groans ever since I bought the car, roughly a year ago now. It had plenty of MOT left and so I took it to my normal garage to have a look. They advised changing some bushes, top and bottom of suspension for safety. All was well for a while, then the car started with a drumming sound, and it feels through the wheel that I am driving along a heavily cobbled road. The noise is not speed dependent, neither is it there all the time. When it happens it usually disappears quickly when I ease off the accelerator. It went back for an MOT and a good look. It passed the MOT, the springs looked ok, it was tracking fine, so all that was left to change were the struts. I bought some new ones, aftermarket but not cheap c**p off EBay. That cured the problem for about 100 miles. Then back it came, got worse and with a loud bang the strut let go. I hadn't told the garage to change the top mounting plates, and in fairness to the garage they looked pretty good. I have now had both changed. The sound is still there and I worry now about safety. When the strut failed I was only about 400 yards from home, so no big problem. The garage seem sure I must have hit a big pothole, but firstly I would have noticed, and secondly for the amount of damage I would have expected a bent wheel and tyre damage at the least. Any ideas what could be wrong?