My Encounter with David Lazar

This is my experience with David Lazar, word for word.

I signed up a while ago for his service over Shopify, and was notified today by Shopify that he had double billed me for the service.

Here are the e-mail exchanges that took place.  Judge for yourself. I would not recommend working with this man. The most important aspect in our company is customer service, and I feel he is lacking that focus.

Please keep in mind while reading this that this is how David Lazar deals with irritated customers.

Me:

HI there,
Disappointed and confused to see that we were charged twice for your service.
This is not good business - wondering what happened there... and why it wasnt rectified and I wasn't notified.
I am now cancelling the service with you.
David's Response:
Hey... thanks for the heads up...
#1 who are you
#2 what were you charged for?
If you choose not to communicate, I can only to choose to not care. I would gladly check out your account, and provide you with a refund if deserved without issue.
Please try harder next time to be normal, and when you write emails to complain about perceived problems, explain them.
Good luck to you.
Thanks for the memories.
Dave
My response:

Dave,
Wow! This is customer service? What memories are you referring to? And please do not ask anything of me, lest of all me to be "normal". I find that insulting and unwarranted.
I am forwarding this to Shopify and writing up a review of my experience with you.
Theresa and Sumit - after going through my account with Bob of Shopify today, we noticed one of the recommended apps had charged me twice for some reason. Bob recommended me writing in asking for an explanation as to this error, and as you can see below, that was done.
You can also see how Dave, the (assumed??) owner of this app, chose to react. I'm baffled and insulted. Not sure wha Shopify's connection or relationship is to this man and his company but I would gently suggest a re-look given the way he speaks to his customers (and I found him through Shopify Apps).
I'm at a complete loss here - not only have I been improperly charged, I have also been insulted. ???
Dave - in my experience, professionals treat their customers with respect and tact. You could have easily looked at my name and website to discover "who I am" and rectify the problem.
Really, the problem should not even exist. Overcharging is theft.
Unfortunately, it seems as if you have chosen to allow pride and rudeness to influence your customer service to me. Your mistake has somehow translated into me being insulted....
Do you know the adage of one upset customer tells x number of people...?
In any case, I'm glad you reacted as such so I don't feel any need to return to your app, regardless of its worth.
Please take the time to refer to your files and refund me the double charge you took from our account. My name, once again (and is also in my signature) is Victoria can Eyk. My shop name is studiomafia.myshopify.com.
Good luck to you and your business... You've lost mine.
I expect a refund within the day and if not I will take other measures to correct this mistreatment.
Please do not contact me again unless you can do so with maturity and respect.
Regards,
David's Response:
TLDR;
Please send me some proof of being over charged, the dates, the amounts, and I will gladly refund you your money.
I do not usually deal with criminal gangs like the mafia, but I will make an exception in your case, even though you chose to be rude and publicly call me out for your troubles. I will take the high road, while you stumble along the low road.
My Response:
Insulting me is not taking the high road.  Keep the money.  Best wishes.
Decide for yourself whether you would like to work with a man who treats his paying customers like this.  I have made my decision.  Thank you for taking the time to read and consider.