Best Deal Window Tint

I contacted this company via email to get a price for having my 4 doors car windows tinted.
They replied back asking for the year of the car. After I gave them the information was quoted $ 140.00
I replied back asking that then it will be minus $ 30.00, per a current promotion I saw advertised on Facebook that you get $ 30.00 off when you booked online, and being this the case will be a total of $ 110.00
They replied back telling me: «No, regular price for that car is $ 160.00, if you book online it will be $ 129.99».
Based on this to me and from this experience seems that they are not honoring their current promotion and seems false advertisement.
I say this in my opinion because after I was given a price and I mentioned the $ 30.00 off promotion, I was given a higher price.
I do know for sure which company I will not be doing business with,
Based on this experience, I recommend everyone to be very careful with this company.