Lexi, sorry to hear about that. You could register with the TPS (Telephone Preference Service) and the Baby MPS (Mailing Preference Service), which is part of the previous one I believe, they are both free and paid by the marketing industry as a service to stop unwanted mail/calls. I cannot post links yet, but a Google Search will bring them first, they both end with a org.uk, they are free services. It was recommended at moneysavingexpert and the BBC. I registered with TPS a few months ago to get rid of calls about PPI and insurances, a few weeks later I stopped receiving the calls. The baby MPS is exactly for cases like yours, where the last thing you want is dealing with those calls and post.
On the thread topic, I went last weekend at Boots and they had lots of travel system/prams/stock on display reduced. The lady said they needed to make room for the new Christmas range. I bought a travel system for £60, which was originally at £240, I took the one on display though, because they had none left packed as a travel system, they only had a couple without the car seat, which was still a great price. Other travel systems were reduced from £300 to £80 and they had some units left. I believe these are offers in store, they are not online. The lady said that they are trying to get rid of the stock they still have from the previous season, so each store might have different stuff at highly reduced prices. Worth to go and ask the assistant, the prices on display were the full prices, only when we asked about the features we had someone telling us the offers, there were no signs or any indication of these new prices. I went to Boots at Trafford Centre (Manchester), on Saturday they still had 3-4 models on offer for Travel Systems. I got the travel system with the pram, the car seat and the rain cover, plus the free changing bag with the purchase of pampers (2 x £6 in the 25 packs), all for £66. It all feels good quality as well. I am really chuffed.