JazaakAllah brother, your answer has enlightened my knowledge of Saum Subhanallah. My hope is that this knowledge will too educate my parents and place them towards the Right Path Insha Allah.
Just one last question, since I have missed a large number of fast (roughly 108) which method of repayment is most suitable to make up for my missed fasts? JazaakAllah.
Yes, it is obligatory for you to pay back the days of fasting which you missed after you reached puberty.
Please do this slowly, to avoid burnout. You can start by fasting on Mondays and Thursdays, and adjust accordingly.
Source:http://seekershub.org/ans-blog/2016/05/25/need-make-fasts-parents-not-allow-keep/
Making up obligatory acts of worship
The scholars state that worship missed for a valid excuse must be made up, but it is not obligatory to make them up immediately, though recommended. Worship missed without a valid excuse must be made up immediately. [Bushra al Karim]
‘Immediately’ means spending all one’s time and efforts to make them up, other than the necessary aspects of life such as eating, sleeping, working etc. In practical terms however, the most realistic way to make up worship is to estimate the amount that one can maintain and continue on it, increasing when possible.
Obeying parents
The general rule in regards to obeying parents is that one does not have to obey them when they forbid one from performing obligatory acts or confirmed sunnas, in the same way one does not listen to them if they order one to do something prohibited.
What is obligatory however, irrespective of what they are asking one to do or not do, is that one treats their parents with kindness and patience.
Source:http://seekershub.org/ans-blog/2017/02/25/can-make-fasts-even-parents-prevent/
Just to point out that there is no 60 day fast expiation for one not able to fast upon compulsion. Also my brother make a conservative estimate on how many fasts you have missed from puberty until now and keep a record of it and inshaAllah as soon as it is possible for you to begin making up for the missed fasts, then begin to do so even if it is once or twice a week inshaAllah.
Also brother as I mentioned to you previously try your best to get an elder, senior, religious o learned person in your family or local community to talk to your parents about the importance of fasting so that they never prevent you from fasting again inshaAllah. Also make much Dua to Allah and treat your parents with utmost kindness, love, honor and respect regardless of how they reat you or what they say to you as that is what pleases Allah the most.
And Allah knows best in all matters