I would offer a patient who has your concerns several options.
1- if there is excess fat under the chin kybella is a great non surgical alternative. It can take multiple treatments a month or 2 apart to get the resultant fat reduction.
2-If there is no excess fat, just excess skin then Thermage...
Yes, you wasted your money most likely since neither treatment has a very good record of helping loose or dimply skin. Morpheus and bodytite/facetite is the only treatment so far that really works for that purpose and should be done under local with a little iv sedation for complete comfort...