Yes, it sounds like you were treated on kidney, which may be appropriate for tinnitus. Without doing a clinical exam it's hard to say what you, individually, need. But, this condition is connected with kidney energy.
The point I think was used runs very close to the Achilles tendon, and sometimes it is hard to be accurate without disturbing that tendon - maybe this is what has happened. It's not a mistake, but you must understand that some points are very small and it's hard to be totally accurate in locating them. It happens that occasionally even the best practitioner can cause irritation to nerves or tendons. But, a good practitioner will do all to reduce the effects of that close needling: they should see you in their clinic as soon as possible and treat whatever effect free of charge.
I would not be happy with your practitioners response. Perhaps you could find someone who is from your country and has trained in ways that your culture accommodates, instead. Take some time to seek out a properly qualified person, ask them where they trained and for how long (minimum 2000 hours according to the WHO). Just because someone is from China do not assume they are proficient in Chinese Medicine. A good practitioner will not mind you asking those questions.
I hope that helps you. I don't think anything serious is wrong, and be assured this will probably heal itself in its own time. But, you need to have confidence in whoever is treating you and feel sure they will put your interests first.