Yes, only if you want to
No.
Probably not. Any agreement made in writing can only be altered in writing.
If they told you full service included the filter change and you agreed to full service then you agreed to a filter change and you had a meeting of the minds and a verbal agreement. If they did not change the filter they have broken the agreement.
No. Only a court order can override an existing court order. A verbal agreement will be considered by the court in rendering its decision but the verbal agreement in and of itself does not override the original court order. There are some hurdles you have to overcome with a verbal agreement. How can you prove there was ever a verbal agreement in place. I had a verbal agreement with my ex regarding custody of our daughter. She the resided to back out of our agreement and denied ever agreeing to anything. Fortunately I had a call recording application that complied with Federal and Texas State Laws (it announces that its recording the conversation at the beginning of the conversation). Since I was able to prove that we had a verbal agreement, the court honored the verbal agreement. So, a verbal agreement may lead to a decision in your favor if you can prove that an actual "valid" verbal contract has been made
No it doesn't.
Not unless you have a recording of the phonecall as evidence and a judge rules in your favor.
No. Not Florida, but maybe Texas. A verbal agreement, like a wedding vow would be binding. To "unwind" the verbal agreement will probably require a divorce lawyer.
A breach of verbal agreement is when for example: You make a spoken agree with a landlord to clean your house when you move out. You move out and leave it all dirty. You have breached a verbal agreement. Its kind of like breaking a promaise!
Verbal agreements are not binding anywhere.
An verbal agreement is something two or more parties have agreed to do, agreed not to do or an arrangement made verbally and not in writing. In some jurisdictions a verbal agreement can be binding if there are truthworthy witesses to it, in other jurisdictions it may not be binding.
No, it is not.
A "verbal" agreement isn't worth much. If you don't have a written agreement you can't prove there was any agreement at all. I would contact the business and see if they will document your verbal agreement.