As TomYoung says, if you did not have HDHP coverage, then you were ineligible to contribute to an HSA.
I do not understand what the $1,750 is referring to. Did you take any money out of the "HSA"? Or was this money from the IRA part of the money that you contributed to the "HSA"?
If you received a 1099-SA, that means that you made a distribution from your "HSA" (spent money on something). If you did, then contact your HSA administrator and say that you made a MIstaken Distribution (use this phrase). There may be a form for this on their website.
If the administrator accepts your request, then you will send them the signed form and a check for the $1,750 (if that is what the 1099-SA distribution was). Basically, because you didn't spend the money correctly, you are paying it back. The HSA administrator - if they accept this - will send you a corrected 1099-SA with zero distribution (more importantly, they will copy the IRS).
As for the original $4,766, if you did not have HDHP coverage, then you were not eligible to contribute this to an "HSA". Contact your HSA administrator and tell them that you made a mistaken contribution. Be nice to them because they are doing you a favor. If they accept your mistaken contribution request, then they will send you a check for the $4,766.
Then, when these things are done, if you never had an HDHP, ask the administrator to close the account. MAKE SURE you get the Mistaken Distribution request done first so that the paperwork will be correct.
The net result will be that you have $4,766 minus $1,750 in your pocket, that the $4,766 will not be deductible on your return (line 25 on Schedule 1 (From 1040), and nothing will appear ("Health Savings Account...") as Other Income on line 21 on Schedule 1 (Form 1040) - specifically the $1,750.