Shocking Service

I had a4 Meg line with10gigs pm. It was slow but acceptable. I am a pensioner and Telekom called me with a fabulous offer to upgrade my line to a 10 meg line with 100 gigs of data. I was pleased and they delivered my new modem, all was good except I couldn't get my email to work. The everything went pear shaped. Somehow the cancelled my order, lost all my emails and my email account and pit me on a package of one gig a month. I went to the Telekom shop to try resolve this but I had no luckspend at least 10 hours in total speaking to sales trying to recover my lost email account trying to go on the package of the order that was cancelled or at least back to what I had. I have had to top up my account every couple of days as my sons are in England and only the Lord know why I am on a 1 gig package. I just can't resolve this And with my cancer treatment don't have the energy. Please tell me how to go back the the upgraded line, 100 gigs of data and have my email account reinstated as it is the email account I have been using since I got the Internet 20 years ago