Recommended for 206+ Sound from Behind

My Vehicle 206+ 1.4 HDI Urban Movie 2012 Model

Voices began to come from behind. When making a place, a party alarms. This car that will drive me crazy but I love the noise :) I just spent 1600 TL. While someone was sitting, voices began to come to infuriate, even with a slight jolt on the road. I researched in the forum was a problem caused by back torsions.

I am waiting for your advice if there is a solid master you know in İkitelli, Bakırköy, Bağcılar (İstanbul) or if you are a master. If the price is suitable, it is very acceptable. Thanks in advance.