I am sorry you have had this experience. Your posterior bite (occlusion) is very important for protecting your front teeth and for function. I think you may have a few options, however I would highly recommend seeking the care of a prosthodontist, a dental specialist trained in complex restorative care and occlusion. You may have been the hands of a well meaning dentist that is unsure of managing your occlusion, especially if your vertical dimension needed to be restored. Find a prosthodontist in your area, you can look at the website for the American College of Prosthodontist for someone in your area.
Perhaps you are referring to composite veneers. Composite is a material that is not translucent; does not allow any light to shine through, and will appear opaque or matte. If you not happy with the aesthetics of composite or the material your veneers are made of you can seek advice on porcelain or zirconia veneers.
In cosmetic and restorative dentistry it is best to begin with end in mind. For example, we always create the desired aesthetic first in wax. When we have a wax up that is aesthetically pleasing to the patient we take it to the mouth in the form of temporary crowns. These temporaries are then worn and lived with while we make refinements and adjustments per the patient's request and doctor's discretion - until they are perfect for the aesthetics and function. In today's digital world we can also provide patients with a DDS (digital smile design) so that you can see yourself smiling and talking with the final restorations before even beginning. You can reach out to your doctor and share how you are feeling, you can request some reshaping and re contouring, there is a limit to how much the porcelain can be manipulated. In addition, it may have been best for you to consider putting your teeth in a more ideal position, possibly with clear aligner therapy, prior to having your veneers placed. This would have allowed the veneers to be thinner...you may have also found that your natural teeth in the proper position, and perhaps a "gum lift" to expose more of your lateral's (the teeth on either side of your front teeth) would have been aesthetically pleasing for you. I wish you the best of luck!!
You need to call your dental provider whom delivered your bridge. You should not be experiencing what you describe. It is hard to imagine that needing to have a restoration adjusted slightly could cause such discomfort, but it can. Leaving the restoration "high" is detrimental to the tooth structure, periodontal ligaments and even the nerve of the tooth. It is unlikely that you will incur an additional charge; you should call and discuss what you are experiencing with your dentist.
Many people whom have bridges in their mouth also choose clear aligner therapy for straightening and aligning their teeth. These aligners are very much like "retainers", and the treatment is successful. If the bridge is loose or in with a temporary or retrievable cement, it may be more likely that the retainers or aligners could dislodge your bridge, however your dental care provider will be able to handle this for you. If your retainer's and/or aligners are your permanent or final set and you are having concerns about your bridge you should consult with your restorative dentist.