123-reg naspram InterServer 2019

hased ssl around 1900. after tht i called support to help me assign. i was told bcz domain was with other provider i have to point domain names first and then it will be done automatically, otherwsie now it wont go thru and will keep asking about csr and filling the form etc?
i then informed my web developer team abt this and they done it first thing in the morning. i rang to get further help. i was told tht i have to create csr from third website, generate key and wait for confirmation email which could take upto 2 hours, which will have activation link, just click the link and wait for another 20-30 mins to get it active. nothing happened except tht i received email with different set of process? so i questioned why was i told differently in the first place? and working hours have started and it will be showing as website not secure, and give warning sign to anybody going on the website? i was left alone?
i then rang around mid day and was informed tht as domain is with third party i have to create txt record with the other provider, otherwise it wont be done? so i done tht and was advised further to wait and it will be activated soon and then it will assigned to the domain? nothing happened until 1400? so half day was gone and new set of process was followed?
i then rang and i was told tht the previous people made mistakes and it needs to be installed and then have to ask my developer team to point from http to https once installation email confirmation is received, which could take as long as it can? so i comlaint again tht why dont u install its matter of few second for the installation to be done? he said its another team and he cannot to anything further?
nothing happened so i rang again around 1800 and i was told tht installation could take as long as it can, its not automatic and has to be done manually? no manager r there and he can make a urgent note but cant help me further? so 24 hours gone, 5 phone calls, every time was advised very poorly and told to do different steps and cant even assign baby installation which my previous provider done it automatically. all i did with previous provider was purchased ssl? they dont even have any system to mark any issue urgent to call customer back or anything? i lost whole day business and have to apologize so many customers? even after tht there is not definite answer as to when it will be done? every single time i rang them it took atleast 30-45 mins before answer?