GOTOGATE - shocking

I made a booking through GOTOGATE on the 5th of October 2018. Flying the 27th of November 18. On the 26th of October I did a follow up on my booking through the airline website. Only to discover in horror that some of the flights I booked with GOTOGATE does not exist. Through a heavy search I finally found a contact number for GOTOGATE. Numerous emails were sent to GOTOGATE call center and numerous calls were made to the call center. When you finally get hold of someone you get transferred and sometimes cut off. Finally on the 4th of November I got hold of a person by the name of Pooram at their call center and he assured me that the problem will be addressed immediately, and he will give me a call back within 30 minutes to let me know how they have fixed the problem. Still waiting for this call. Then finally I get a response for a proposed new flight schedule only to discover that I have to be on 2 different flights at the same time, I responded to the email and said I cant except the proposed schedule. After that email zero response from Pooram - 4 November 18. From the 4th of November 18 till the 7th of November multiple emails were sent to GOTOGATE with no response. On the 7th Of November I called the call center again and spoke to Shahib H, customer care. Once again I had to explain the entire process to him from start. After a few minutes he said he will see how he can assist which he came back with a different proposed flight schedule. I said I will accept this schedule but he needs to confirm the changes made and send me a reference number. He said he will get back to me with the flight schedule by 9th of November 18, latest the 12th of November. Today the 12th of November I once again sent a follow up email on for my flight, zero response. 7 phone calls made to GOTOGATE customer care number +1 ********** and placed in their waiting system, each time waiting for 15min then get cut off, then you phone again. It has been 3 weeks to try and correct this error made by GOTOGATE and the service they provide in the least words possible - SHOCKING I lodged a complaint to ********** according to the internet its GOTOGATE's complaint department. Only to receive an email back stating that the complain is not in "their channel " to assist, I need to contact customer care again. At least I received a response from them within a few hours For a Travel Agent as they call "themselves" its the worst service I have ever experienced. Their follow up on emails very bad, their call center response and answering phones very bad. All I wanted was them to correct my flight schedule before I am due to depart, extremely poor service